diff --git a/README.md b/README.md
index dd331b73d..379bf9ffa 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ Version **1.8.15** was the last that supports older systems
 ## Build instructions
 
 * [Visual Studio 2019][msvc]
-* [Xcode 11][xcode]
+* [Xcode 12][xcode]
 * [CMake on GNU/Linux][cmake]
 
 [//]: # (LINKS)
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index 041700d9a..db142d165 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -3409,7 +3409,6 @@ void HistoryWidget::mouseReleaseEvent(QMouseEvent *e) {
 	if (_replyForwardPressed) {
 		_replyForwardPressed = false;
 		update(0, _field->y() - st::historySendPadding - st::historyReplyHeight, width(), st::historyReplyHeight);
-		setupPinnedTracker(); AssertIsDebug();
 	}
 	if (_recording) {
 		stopRecording(_peer && _inField);
diff --git a/Telegram/SourceFiles/mtproto/session_private.cpp b/Telegram/SourceFiles/mtproto/session_private.cpp
index 75e6a2c13..b796701f1 100644
--- a/Telegram/SourceFiles/mtproto/session_private.cpp
+++ b/Telegram/SourceFiles/mtproto/session_private.cpp
@@ -115,7 +115,7 @@ void WrapInvokeAfter(
 	auto cb = reinterpret_cast<const char*>(b);
 	volatile auto different = false;
 	for (const auto ce = ca + size; ca != ce; ++ca, ++cb) {
-		different |= (*ca != *cb);
+		different = different | (*ca != *cb);
 	}
 	return different;
 }
diff --git a/Telegram/ThirdParty/rlottie b/Telegram/ThirdParty/rlottie
index 3426bf778..cbd43984e 160000
--- a/Telegram/ThirdParty/rlottie
+++ b/Telegram/ThirdParty/rlottie
@@ -1 +1 @@
-Subproject commit 3426bf778d306d41b1d1052fa06fa07ba24b2608
+Subproject commit cbd43984ebdf783e94c8303c41385bf82aa36d5b
diff --git a/Telegram/build/deploy.sh b/Telegram/build/deploy.sh
index e3e9fdf5b..ea4bde9bb 100755
--- a/Telegram/build/deploy.sh
+++ b/Telegram/build/deploy.sh
@@ -70,13 +70,7 @@ else
   DeployMac="1"
   DeployWin="1"
   DeployLinux="1"
-  if [ "$AlphaVersion" == "0" ]; then
-    DeployOsx="1"
-    DeployLinux32="1"
-    echo "Deploying five versions of $AppVersionStrFull: for Windows, OS X 10.10 and 10.11, macOS, Linux 64 bit and Linux 32 bit.."
-  else
-    echo "Deploying three versions of $AppVersionStrFull: for Windows, macOS and Linux 64 bit.."
-  fi
+  echo "Deploying three versions of $AppVersionStrFull: for Windows, macOS and Linux 64 bit.."
 fi
 if [ "$BuildTarget" == "mac" ]; then
   BackupPath="$HOME/Projects/backup/tdesktop"
diff --git a/Telegram/build/release.py b/Telegram/build/release.py
index dcccafccb..5253a25ab 100644
--- a/Telegram/build/release.py
+++ b/Telegram/build/release.py
@@ -184,13 +184,6 @@ files.append({
   'mime': 'application/octet-stream',
   'label': 'macOS 10.12+: Installer',
 })
-files.append({
-  'local': 'tsetup-osx.' + version_full + '.dmg',
-  'remote': 'tsetup-osx.' + version_full + '.dmg',
-  'backup_folder': 'tosx',
-  'mime': 'application/octet-stream',
-  'label': 'OS X 10.10 and 10.11: Installer',
-})
 files.append({
   'local': 'tsetup.' + version_full + '.tar.xz',
   'remote': 'tsetup.' + version_full + '.tar.xz',
@@ -198,13 +191,6 @@ files.append({
   'mime': 'application/octet-stream',
   'label': 'Linux 64 bit: Binary',
 })
-files.append({
-  'local': 'tsetup32.' + version_full + '.tar.xz',
-  'remote': 'tsetup32.' + version_full + '.tar.xz',
-  'backup_folder': 'tlinux32',
-  'mime': 'application/octet-stream',
-  'label': 'Linux 32 bit: Binary',
-})
 files.append({
   'local': 'sources',
   'remote': 'tdesktop-' + version + '-full.tar.gz',
diff --git a/changelog.txt b/changelog.txt
index bfd779434..c23f21627 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -5,6 +5,7 @@
 - Send several music tracks as a playlist. 
 - Send several files as an album in one chat bubble.
 - Send a :slot_machine: emoji to any chat to see if you hit the jackpot.
+- Hide Telegram taskbar icon on Linux in Settings > Advanced.
 
 2.4.4 (23.10.20)
 
diff --git a/docs/building-cmake.md b/docs/building-cmake.md
index 27022d9a9..c8337db9a 100644
--- a/docs/building-cmake.md
+++ b/docs/building-cmake.md
@@ -278,6 +278,8 @@ Go to ***BuildPath*** and run
         -openssl-linked \
         -I "$OPENSSL_DIR/include" \
         OPENSSL_LIBS="$OPENSSL_DIR/lib/libssl.a $OPENSSL_DIR/lib/libcrypto.a -ldl -lpthread" \
+        -I "/usr/local/include" \
+        LIBJPEG_LIBS="/usr/local/lib/libjpeg.a" \
         -nomake examples \
         -nomake tests
 
diff --git a/docs/building-xcode.md b/docs/building-xcode.md
index dae91359e..f3a599b62 100644
--- a/docs/building-xcode.md
+++ b/docs/building-xcode.md
@@ -1,4 +1,4 @@
-## Build instructions for Xcode 11
+## Build instructions for Xcode 12
 
 ### Prepare folder
 
@@ -80,6 +80,7 @@ Go to ***BuildPath*** and run
     cmake -B build . \
         -DCMAKE_BUILD_TYPE=Release \
         -DCMAKE_INSTALL_PREFIX=/usr/local/macos \
+        -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.12 \
         -DWITH_JPEG8=ON \
         -DPNG_SUPPORTED=OFF
     cmake --build build $MAKE_THREADS_CNT