Hi, I have an upload question that normally works but hangs in (versions of?) chrome, e.g. windows chrome 84.0.4147.89. The problem appears to be similar as described here: bugs.limesurvey.org/view.php?id=16415 , only I'm using LimeSurvey 4.3.3. I've tried commenting iframe.setAttribute('srcdoc', this._settings.action); (line 512 in assets/packages/questions/upload/src/ajaxupload.js), but this doesn't solve the problem. Would anyone know if there's a solution to this problem? Thanks!