diff --git a/Telegram/SourceFiles/mainwindow.cpp b/Telegram/SourceFiles/mainwindow.cpp
index 9bad8c5f5..f60968c5d 100644
--- a/Telegram/SourceFiles/mainwindow.cpp
+++ b/Telegram/SourceFiles/mainwindow.cpp
@@ -557,8 +557,13 @@ bool MainWindow::doWeMarkAsRead() {
 	if (!_main || Ui::isLayerShown()) {
 		return false;
 	}
-	updateIsActive();
-	return isActive() && _main->doWeMarkAsRead();
+	// for tile grid in case other windows have shadows
+	// i've seen some windows with >70px shadow margins
+	const auto margin = style::ConvertScale(100);
+	return Ui::IsContentVisible(
+		this,
+		inner().marginsRemoved(QMargins(margin, margin, margin, margin)))
+		&& _main->doWeMarkAsRead();
 }
 
 void MainWindow::checkHistoryActivation() {