diff --git a/apps/red-ui/src/app/modules/pdf-viewer/services/document-viewer.service.ts b/apps/red-ui/src/app/modules/pdf-viewer/services/document-viewer.service.ts
index 4e6679ea3..fc85b35ce 100644
--- a/apps/red-ui/src/app/modules/pdf-viewer/services/document-viewer.service.ts
+++ b/apps/red-ui/src/app/modules/pdf-viewer/services/document-viewer.service.ts
@@ -105,9 +105,9 @@ export class REDDocumentViewer {
         this.#pdf.instance.UI.setAnnotationContentOverlayHandler(() => (current ? undefined : false));
     }
 
-    init(document: DocumentViewer) {
+    init(document: DocumentViewer, zOrderFlag: number) {
         this.#document = document;
-        this.#listenForDocEvents();
+        this.#listenForDocEvents(zOrderFlag);
         this.keyUp$ = this.#keyUp$;
     }
 
@@ -160,7 +160,7 @@ export class REDDocumentViewer {
         }
     }
 
-    #listenForDocEvents() {
+    #listenForDocEvents(zOrderFlag: number) {
         this.#document.addEventListener('textSelected', (quads: Quad, selectedText: string, pageNumber: number) => {
             this.selectedText$.next(selectedText);
             this.#disableTextPopupIfCompareMode(pageNumber);
@@ -180,6 +180,8 @@ export class REDDocumentViewer {
         this.#document.addEventListener('documentLoaded', () => {
             this.#logger.info('[PDF] Document loaded');
 
+            this.document.setTextExtractorProcessingFlags([zOrderFlag]);
+
             this.#pdf.runWithCleanup(() => {
                 this.#flattenAnnotations().then();
                 this.#setCurrentPage();
diff --git a/apps/red-ui/src/app/modules/pdf-viewer/services/webviewer-loaded.guard.ts b/apps/red-ui/src/app/modules/pdf-viewer/services/webviewer-loaded.guard.ts
index 2f6491588..06166a4fc 100644
--- a/apps/red-ui/src/app/modules/pdf-viewer/services/webviewer-loaded.guard.ts
+++ b/apps/red-ui/src/app/modules/pdf-viewer/services/webviewer-loaded.guard.ts
@@ -35,7 +35,7 @@ export function webViewerLoadedGuard(): CanActivateFn | ResolveFn<boolean> {
         }
 
         annotationManager.init(instance.Core.annotationManager);
-        documentViewer.init(instance.Core.documentViewer);
+        documentViewer.init(instance.Core.documentViewer, instance.Core.TextExtractorProcessingFlags.EXTRACT_USING_ZORDER);
         viewerHeaderService.init();
 
         return !!pdf.instance;