From e957235cacc817f7fe798bd2f5d5cbd3cca5d173 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Sun, 13 Sep 2026 07:23:33 +0300
Subject: [PATCH] Fixed leak of premium preview preloads after show expiry.

---
 Telegram/SourceFiles/boxes/premium_preview_box.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Telegram/SourceFiles/boxes/premium_preview_box.cpp b/Telegram/SourceFiles/boxes/premium_preview_box.cpp
index 732891ec60..98db3bb06b 100644
--- a/Telegram/SourceFiles/boxes/premium_preview_box.cpp
+++ b/Telegram/SourceFiles/boxes/premium_preview_box.cpp
@@ -1326,6 +1326,15 @@ void Show(
 	}
 }
 
+void RemoveExpiredPreloads() {
+	auto &list = Preloads();
+	list.erase(
+		ranges::remove_if(list, [](const Preload &preload) {
+			return preload.show.expired();
+		}),
+		end(list));
+}
+
 void Show(std::shared_ptr<ChatHelpers::Show> show, QImage back) {
 	auto &list = Preloads();
 	for (auto i = begin(list); i != end(list);) {
@@ -1479,6 +1488,8 @@ void Show(
 		crl::on_main([=] {
 			if (auto strong = weak.lock()) {
 				Show(std::move(strong), result);
+			} else {
+				RemoveExpiredPreloads();
 			}
 		});
 	});