fix(pdfjs): not reacting to deleting highlights or moving (closes #9069)

packages/pdfjs-viewer/src/annotations.ts

@@ -81,6 +81,10 @@ export function setupAnnotationLiveUpdates() {
 
     // Fires when editor properties change (e.g. color, thickness).
     app.eventBus.on("annotationeditorparamschanged", debouncedRefresh);
+
+    // Catches deletions, undo/redo, and comment deletion which
+    // don't trigger onSetModified or annotationeditorparamschanged.
+    app.eventBus.on("editingstateschanged", debouncedRefresh);
 }
 
 async function extractAndSendAnnotations() {

packages/pdfjs-viewer/src/custom.ts

@@ -126,6 +126,11 @@ function manageSave() {
     app.eventBus.on("switchannotationeditorparams", () => {
         onChange();
     });
+    // Catches deletions of existing annotations, undo/redo, and comment deletion
+    // which don't trigger onSetModified or switchannotationeditorparams.
+    app.eventBus.on("editingstateschanged", () => {
+        onChange();
+    });
 }
 
 function manageDownload() {