diff --git a/app/appearance/themes/daylight/theme.css b/app/appearance/themes/daylight/theme.css
index 65977c8bf..063772071 100644
--- a/app/appearance/themes/daylight/theme.css
+++ b/app/appearance/themes/daylight/theme.css
@@ -148,7 +148,8 @@
 /* PDF */
 .textLayer,
 .pdf__resize {
-    mix-blend-mode: darken;
+    /* dark 蓝色、紫色背景显示不清楚，文档位于 https://github.com/siyuan-note/siyuan/issues/5351 */
+    mix-blend-mode: multiply;
 }
 
 .b3-typography div.hljs, .protyle-wysiwyg div.hljs {
diff --git a/app/src/util/history.ts b/app/src/util/history.ts
index 57638a92c..1dbef852c 100644
--- a/app/src/util/history.ts
+++ b/app/src/util/history.ts
@@ -443,16 +443,19 @@ export const openHistory = () => {
                         }
                     });
                 });
+                break;
             } else if (type === "uploadSnapshot") {
                 fetchPost("/api/repo/uploadCloudSnapshot", {
                     tag: target.parentElement.getAttribute("data-tag"),
                     id: target.parentElement.getAttribute("data-id")
                 });
+                break;
             } else if (type === "downloadSnapshot") {
                 fetchPost("/api/repo/downloadCloudSnapshot", {
                     tag: target.parentElement.getAttribute("data-tag"),
                     id: target.parentElement.getAttribute("data-id")
                 });
+                break;
             } else if (type === "genTag") {
                 const genTagDialog = new Dialog({
                     title: window.siyuan.languages.tagSnapshot,