diff --git a/test/core/workflow/workflow-upload/action-binder.test.js b/test/core/workflow/workflow-upload/action-binder.test.js
index 28b5b6c18..ecf27b0e8 100644
--- a/test/core/workflow/workflow-upload/action-binder.test.js
+++ b/test/core/workflow/workflow-upload/action-binder.test.js
@@ -1920,5 +1920,28 @@ describe('Unity Upload Block', () => {
       testDiv.dispatchEvent(clickEvent);
       expect(testDiv).to.not.be.null;
     });
+
+    it('should prevent double file picker while lock is active', async () => {
+      const actionBinder = new ActionBinder(unityEl, workflowCfg, unityEl, [unityEl]);
+      const container = document.createElement('div');
+      const fileInput = document.createElement('input');
+      fileInput.type = 'file';
+      fileInput.id = 'file-upload';
+      fileInput.className = 'file-upload';
+      container.appendChild(fileInput);
+
+      await actionBinder.initActionListeners(container, { '#file-upload': 'upload' });
+
+      let openCount = 0;
+      fileInput.addEventListener('click', (e) => {
+        if (e.defaultPrevented) return;
+        openCount += 1;
+      });
+
+      fileInput.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true }));
+      fileInput.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true }));
+
+      expect(openCount).to.equal(1);
+    });
   });
 });
diff --git a/unitylibs/core/workflow/workflow-upload/action-binder.js b/unitylibs/core/workflow/workflow-upload/action-binder.js
index 641fc8b8e..7c1693c2e 100644
--- a/unitylibs/core/workflow/workflow-upload/action-binder.js
+++ b/unitylibs/core/workflow/workflow-upload/action-binder.js
@@ -548,7 +548,18 @@ export default class ActionBinder {
         if (this.limits.allowedFileTypes?.length) {
           el.setAttribute('accept', this.limits.allowedFileTypes.join(','));
         }
-        el.addEventListener('click', () => {
+        let isFilePickerOpen = false;
+        el.addEventListener('click', (e) => {
+          if (isFilePickerOpen) {
+            e.preventDefault();
+            return;
+          }
+          isFilePickerOpen = true;
+          const releaseFilePickerLock = () => { isFilePickerOpen = false; };
+          window.addEventListener('focus', releaseFilePickerLock, { once: true });
+          document.addEventListener('visibilitychange', () => {
+            if (document.visibilityState === 'visible') releaseFilePickerLock();
+          }, { once: true });
           this.canvasArea.forEach((element) => {
             const errHolder = element.querySelector('.alert-holder');
             if (errHolder?.classList.contains('show')) {
@@ -558,6 +569,7 @@ export default class ActionBinder {
           });
         });
         el.addEventListener('change', async (e) => {
+          isFilePickerOpen = false;
           const files = this.extractFiles(e);
           this.filesData = { count: files.length, size: files[0].size, type: files[0].type };
           this.logAnalyticsinSplunk('Click Drag and drop|UnityWidget', { assetId: this.assetId, fileMetaData: this.filesData });