diff --git a/debian/changelog b/debian/changelog
index 4b3e1c4a..f5d7ad6b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-spark-store (5.2.1.7-test) UNRELEASED; urgency=medium
+spark-store (5.2.1.8-test) UNRELEASED; urgency=medium
 
   * Initial release. (Closes: #nnnn)  <nnnn is the bug number of your ITP>
 
diff --git a/src/composables/useAppDetail.ts b/src/composables/useAppDetail.ts
index 2e38b232..3378e0dc 100644
--- a/src/composables/useAppDetail.ts
+++ b/src/composables/useAppDetail.ts
@@ -417,7 +417,12 @@ const checkScreenshotExists = async (
     await axiosInstance.head(url, { timeout: 3000, signal });
     screenshotExistenceCache.set(url, true);
     return true;
-  } catch {
+  } catch (err) {
+    // 请求被主动取消（用户快速切换/关闭详情触发 abort）时，不应把该 URL 误记为
+    // "不存在"污染缓存——否则同进程内再打开该应用会少显示图片，直到重启才恢复。
+    // 取消错误直接上抛，由 loadScreenshots 的 Promise.all reject 被 openDetail 吞掉，
+    // 既不写缓存也不覆盖 screenshots，后续成功的轮次（新 controller）会正确填充。
+    if (signal?.aborted) throw err;
     screenshotExistenceCache.set(url, false);
     return false;
   }