From be89a0bf7e506abb67b157ed5df6a6e3ff5ee067 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Fri, 5 Apr 2019 23:42:10 +0300
Subject: [PATCH] Fixed dialogs up button when column of dialogs is small.

---
 Telegram/SourceFiles/dialogs/dialogs_widget.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/dialogs/dialogs_widget.cpp b/Telegram/SourceFiles/dialogs/dialogs_widget.cpp
index dc0fa0038..8d1059e84 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_widget.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_widget.cpp
@@ -275,6 +275,8 @@ void DialogsWidget::updateScrollUpVisibility() {
 }
 
 void DialogsWidget::startScrollUpButtonAnimation(bool shown) {
+	const auto smallColumn = (width() < st::columnMinimalWidthLeft);
+	shown &= !smallColumn;
 	if (_scrollToTopIsShown == shown) {
 		return;
 	}
@@ -283,7 +285,7 @@ void DialogsWidget::startScrollUpButtonAnimation(bool shown) {
 		[=] { updateScrollUpPosition(); },
 		_scrollToTopIsShown ? 0. : 1.,
 		_scrollToTopIsShown ? 1. : 0.,
-		st::historyToDownDuration);
+		smallColumn ? 0 : st::historyToDownDuration);
 }
 
 void DialogsWidget::updateScrollUpPosition() {