diff --git a/tools/chatgui/src/messagefeedback.cpp b/tools/chatgui/src/messagefeedback.cpp
index 03ab99e3..2bebc5bd 100644
--- a/tools/chatgui/src/messagefeedback.cpp
+++ b/tools/chatgui/src/messagefeedback.cpp
@@ -23,6 +23,7 @@
 #include <QWidgetAction>
 #include <QScrollArea>
 #include <QHBoxLayout>
+#include <QScopeGuard>
 #include <QToolButton>
 #include <cstring>
 
@@ -65,7 +66,8 @@ void MessageList::requestReaction(const QModelIndex& index, int emoji) {
         sendFeedback({{"cmd", "react"}, {"ch", channel}, {"message_id", messageId}, {"emoji", emoji}}); return;
     }
     GUI_DEBUG("reaction: picker opened ch=%s message=%s", qPrintable(channel), qPrintable(messageId));
-    QMenu menu(m_view); addReactionActions(&menu, channel, messageId); menu.exec(QCursor::pos());
+    QMenu menu; connect(this, &QObject::destroyed, &menu, &QMenu::close);
+    addReactionActions(&menu, channel, messageId); menu.exec(QCursor::pos());
 }
 
 /* Итог для баббла и открытого диалога; строковые поля показываем как обычный текст. */
@@ -81,15 +83,18 @@ static QString pollSummary(const QJsonObject& poll) {
 }
 
 /* Команды владеют только C-данными; QObject остаются в GUI-потоке. */
-void MessageList::sendFeedback(QJsonObject command, bool userAction) {
-    if (!gui_bridge_get_inst()) { GUI_ERROR("feedback: core unavailable"); return; }
+bool MessageList::sendFeedback(QJsonObject command, bool userAction) {
     if (!command.contains("ch")) command["ch"] = m_currentChannelId;
+    if (command.value("ch").toString().isEmpty() || (userAction && command.value("ch").toString() != m_currentChannelId)) {
+        GUI_WARN("feedback: stale/empty channel rejected"); return false;
+    }
     QByteArray json = QJsonDocument(command).toJson(QJsonDocument::Compact);
     auto* req = static_cast<chat_feedback_request*>(u_malloc(sizeof(chat_feedback_request) + json.size() + 1));
-    if (!req) { GUI_ERROR("feedback: command allocation failed bytes=%d", json.size()); return; }
-    req->inst = gui_bridge_get_inst(); req->request_id = userAction ? ++m_feedbackSequence : 0;
+    if (!req) { GUI_ERROR("feedback: command allocation failed bytes=%d", json.size()); return false; }
+    req->request_id = userAction ? ++m_feedbackSequence : 0;
     memcpy(req + 1, json.constData(), json.size()); reinterpret_cast<char*>(req + 1)[json.size()] = 0;
-    gui_bridge_post_uasync_fn(chat_feedback_command_trampoline, req);
+    if (gui_bridge_post_bound_fn(chat_feedback_command_trampoline, req, &req->inst) < 0) { u_free(req); return false; }
+    return true;
 }
 
 void MessageList::setupFeedback(QStandardItem* item, const MessageRow& message, const QString& channel) {
@@ -124,12 +129,15 @@ void MessageList::onFeedbackChanged(const uint8_t* data, int len) {
 }
 
 void MessageList::onFeedbackResult(const uint8_t* data, int len) {
-    if (!data || len < 9) { GUI_ERROR("feedback: invalid result event bytes=%d", len); return; }
+    if (!data || len < 9 || data[8] > 1) { GUI_ERROR("feedback: invalid result event bytes=%d", len); return; }
     quint64 request; memcpy(&request, data, 8);
-    QJsonObject state = QJsonDocument::fromJson(QByteArray(reinterpret_cast<const char*>(data + 9), len - 9)).object();
+    QJsonParseError error;
+    const auto document = QJsonDocument::fromJson(QByteArray(reinterpret_cast<const char*>(data + 9), len - 9), &error);
+    if (error.error != QJsonParseError::NoError || !document.isObject()) { GUI_ERROR("feedback: invalid result JSON"); return; }
+    QJsonObject state = document.object();
     if (!data[8]) {
         GUI_ERROR("feedback: command failed request=%llu reason=%s", (unsigned long long)request, qPrintable(state.value("error").toString()));
-        if (request) {
+        if (request && gui_bridge_is_uasync_ready()) {
             m_pendingPoll.clear(); QByteArray reason = state.value("error").toString().toUtf8();
             QMessageBox::warning(this, feedbackText("Polls and reactions"), feedbackText(reason.constData()));
         }
@@ -175,7 +183,10 @@ void MessageList::applyFeedback(const QJsonObject& state) {
 
 void MessageList::createPoll() {
     if (m_currentChannelId.isEmpty() || isDmChannel(m_currentChannelId)) return;
-    QDialog dialog(this); dialog.setWindowTitle(feedbackText("Create poll")); auto* layout = new QVBoxLayout(&dialog);
+    const QString channel = m_currentChannelId;
+    QPointer<QDialog> holder = new QDialog(this); auto release = qScopeGuard([&] { delete holder.data(); });
+    QDialog& dialog = *holder;
+    dialog.setWindowTitle(feedbackText("Create poll")); auto* layout = new QVBoxLayout(&dialog);
     auto* question = new QPlainTextEdit(&dialog); question->setPlaceholderText(feedbackText("Question")); question->setMaximumHeight(70);
     auto* options = new QPlainTextEdit(&dialog); options->setPlaceholderText(feedbackText("One option per line"));
     auto* mode = new QComboBox(&dialog); mode->addItem(feedbackText("Single choice")); mode->addItem(feedbackText("Multiple choices"));
@@ -183,7 +194,7 @@ void MessageList::createPoll() {
     auto* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, &dialog);
     layout->addWidget(question); layout->addWidget(options); layout->addWidget(mode); layout->addWidget(custom); layout->addWidget(buttons);
     connect(buttons, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
-    connect(buttons, &QDialogButtonBox::accepted, &dialog, [&, this]() {
+    connect(buttons, &QDialogButtonBox::accepted, &dialog, [&, this, channel]() {
         const QString title = question->toPlainText().trimmed(); QJsonArray values; QSet<QString> unique;
         int bytes = 6 + title.toUtf8().size(); bool valid = !title.isEmpty() && title.toUtf8().size() <= CHAT_POLL_QUESTION_MAX;
         for (const auto& line : options->toPlainText().split('\n')) {
@@ -195,9 +206,8 @@ void MessageList::createPoll() {
             QMessageBox::warning(&dialog, feedbackText("Create poll"),
                 feedbackText("Enter a question and distinct options within the size limit.")); return;
         }
-        sendFeedback({{"cmd", "poll_create"}, {"question", title}, {"options", values},
-            {"mode", mode->currentIndex() ? "multiple" : "single"}, {"allow_custom_answer", custom->isChecked()}});
-        dialog.accept();
+        if (sendFeedback({{"cmd", "poll_create"}, {"ch", channel}, {"question", title}, {"options", values},
+            {"mode", mode->currentIndex() ? "multiple" : "single"}, {"allow_custom_answer", custom->isChecked()}})) dialog.accept();
     });
     dialog.resize(420, 360); dialog.exec();
 }
@@ -210,9 +220,13 @@ void MessageList::showPoll(const QString& messageId) {
     auto state = m_feedback.value(messageId), poll = state.value("poll").toObject();
     if (poll.isEmpty()) {
         GUI_DEBUG("poll: requesting state ch=%s message=%s", qPrintable(m_currentChannelId), qPrintable(messageId));
-        m_pendingPoll = messageId; sendFeedback({{"cmd", "feedback"}, {"message_id", messageId}}); return;
+        m_pendingPoll = messageId;
+        if (!sendFeedback({{"cmd", "feedback"}, {"message_id", messageId}})) m_pendingPoll.clear();
+        return;
     }
-    QDialog dialog(this); dialog.setWindowTitle(feedbackText("Vote / results"));
+    const QString channel = m_currentChannelId; QPointer<MessageList> self(this);
+    QPointer<QDialog> holder = new QDialog(this); auto release = qScopeGuard([&] { delete holder.data(); });
+    QDialog& dialog = *holder; dialog.setWindowTitle(feedbackText("Vote / results"));
     m_pollDialog = &dialog; m_pollDialogMessage = messageId; auto* layout = new QVBoxLayout(&dialog);
     auto* title = new QLabel(poll.value("question").toString(), &dialog); title->setTextFormat(Qt::PlainText); title->setWordWrap(true);
     layout->addWidget(title);
@@ -243,20 +257,22 @@ void MessageList::showPoll(const QString& messageId) {
     auto* buttons = new QDialogButtonBox(QDialogButtonBox::Save | QDialogButtonBox::Cancel, &dialog);
     auto* withdraw = buttons->addButton(feedbackText("Withdraw vote"), QDialogButtonBox::ActionRole);
     layout->addWidget(buttons);
-    connect(withdraw, &QPushButton::clicked, &dialog, [&, this]() {
-        sendFeedback({{"cmd", "vote"}, {"message_id", messageId}, {"choices", QJsonArray{}}, {"custom", ""}}); dialog.accept();
+    connect(withdraw, &QPushButton::clicked, &dialog, [&, this, channel]() {
+        if (sendFeedback({{"cmd", "vote"}, {"ch", channel}, {"message_id", messageId}, {"choices", QJsonArray{}}, {"custom", ""}})) dialog.accept();
     });
     connect(buttons, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
-    connect(buttons, &QDialogButtonBox::accepted, &dialog, [&, this]() {
+    connect(buttons, &QDialogButtonBox::accepted, &dialog, [&, this, channel]() {
         QJsonArray ids; for (int i = 0; i < choices.size(); i++) if (choices[i]->isChecked()) ids.append(i);
         QString text = poll.value("allow_custom_answer").toBool() && (multiple || (other && other->isChecked()))
             ? own->toPlainText().trimmed() : QString();
         if (text.toUtf8().size() > CHAT_POLL_CUSTOM_MAX || (other && other->isChecked() && text.isEmpty())) {
             QMessageBox::warning(&dialog, feedbackText("Your answer"), feedbackText("Enter a shorter nonempty answer.")); return;
         }
-        sendFeedback({{"cmd", "vote"}, {"message_id", messageId}, {"choices", ids}, {"custom", text}}); dialog.accept();
+        if (sendFeedback({{"cmd", "vote"}, {"ch", channel}, {"message_id", messageId}, {"choices", ids}, {"custom", text}})) dialog.accept();
     });
     GUI_INFO("poll: opening dialog ch=%s message=%s options=%d", qPrintable(m_currentChannelId), qPrintable(messageId), int(values.size()));
-    applyFeedback(state); dialog.resize(450, 560); dialog.exec(); m_pollDialog = nullptr; m_pollDialogMessage.clear();
+    applyFeedback(state); dialog.resize(450, 560); dialog.exec();
+    if (!self) return;
+    m_pollDialog = nullptr; m_pollDialogMessage.clear();
     GUI_DEBUG("poll: dialog closed message=%s", qPrintable(messageId));
 }
diff --git a/tools/chatgui/src/messagelist.cpp b/tools/chatgui/src/messagelist.cpp
index 11f41595..9ae317ba 100644
--- a/tools/chatgui/src/messagelist.cpp
+++ b/tools/chatgui/src/messagelist.cpp
@@ -426,6 +426,7 @@ MessageList::MessageList(DbManager* db, AudioRecorder* recorder, QWidget *parent
         m_peerStatus->hide();
         hl->addWidget(m_peerStatus);
         m_channelTitle = new QLabel(header);
+        m_channelTitle->setTextFormat(Qt::PlainText);
         m_channelTitle->setStyleSheet("font-weight: bold; font-size: 14px;");
         m_channelTitle->setText(QCoreApplication::translate("ChatGui", "Channel"));
         hl->addWidget(m_channelTitle, 1);
@@ -435,6 +436,7 @@ MessageList::MessageList(DbManager* db, AudioRecorder* recorder, QWidget *parent
         connect(m_keyRequestsButton, &QPushButton::clicked, this, &MessageList::showKeyRequests);
         hl->addWidget(m_keyRequestsButton);
         m_talkingLabel = new QLabel(header);
+        m_talkingLabel->setTextFormat(Qt::PlainText);
         m_talkingLabel->setStyleSheet("color: #27ae60; font-size: 12px;");
         m_talkingLabel->hide();
         hl->addWidget(m_talkingLabel);
@@ -503,7 +505,7 @@ MessageList::MessageList(DbManager* db, AudioRecorder* recorder, QWidget *parent
                            qPrintable(channel), (unsigned long long)source.id, (unsigned long long)source.epoch);
                 emit streamRequested(channel.toULongLong(), source.id, source.epoch, source.name);
             };
-            QMenu menu(this);
+            QMenu menu; connect(this, &QObject::destroyed, &menu, &QMenu::close);
             auto* all = menu.addAction(QCoreApplication::translate("ChatGui", "Watch all active streams"));
             connect(all, &QAction::triggered, this, [this, channel] {
                 if (channel == m_currentChannelId) emit allStreamsRequested(channel.toULongLong());
@@ -553,7 +555,7 @@ MessageList::MessageList(DbManager* db, AudioRecorder* recorder, QWidget *parent
             const QString channel = m_currentChannelId;
             if (!channel.toULongLong()) return;
             auto text = [](const char* s) { return QCoreApplication::translate("ChatGui", s); };
-            QMenu menu(this);
+            QMenu menu; connect(this, &QObject::destroyed, &menu, &QMenu::close);
             const bool own = m_streamPublisherGroup != 0;
             auto* publish = menu.addAction(text(own ? "Manage stream" : "Start stream"));
             menu.addSeparator();
@@ -893,6 +895,7 @@ void MessageList::loadChannel(const QString& channelId) {
     }
 
     if (!sameChannel) m_historyAnchor.clear();
+    if (!sameChannel && m_pollDialog) m_pollDialog->reject();
     m_view->setHistoricalWindow(!m_historyAnchor.isEmpty());
     m_model->clear();
     m_avatarCache.clear();
@@ -1386,6 +1389,7 @@ void MessageList::onMessageContextMenu(const QPoint& pos) {
     bool downloaded = !filePath.isEmpty() && QFile::exists(filePath);
 
     QMenu menu;
+    connect(this, &QObject::destroyed, &menu, &QMenu::close);
     QPointer<MessageList> guard(this);
     QString messageId = idx.data(MsgMessageKeyRole).toString();
     if (!isDm && messageId.size() == 64) {
diff --git a/tools/chatgui/src/messagelist.h b/tools/chatgui/src/messagelist.h
index 58f01c68..d5d72015 100644
--- a/tools/chatgui/src/messagelist.h
+++ b/tools/chatgui/src/messagelist.h
@@ -123,7 +123,7 @@ private:
     void refreshReplies();
     void jumpToMessage(const QString& messageId);
 
-    void sendFeedback(QJsonObject command, bool userAction = true);
+    bool sendFeedback(QJsonObject command, bool userAction = true); // true — запрос принят; ch фиксируется до модального UI.
     void setupFeedback(QStandardItem* item, const MessageRow& message, const QString& channel);
     void createPoll();
     void showPoll(const QString& messageId);