Change Details

Simply test it: During the whole upload process 2 intervalls *per file* are not cleared: var se = window.setInterval; window.setInterval = function (fn, t) { return se(function() { console.log(fn, t); fn(); }, t) }; If you upload 50 files, this means 100 events fire (all the time) within 500ms, executing a function that is computing some numbers from the DOM (object position) and setting CSS. Not good for old machines and slow browsers. Culprit: /extensions/UploadWizard/resources/mw.UploadWizardUploadInterface.js moveFileInputToCover: function( selector ) { //... this.moveFileInputInterval = window.setInterval(function() { update(); }, 500); } -------------------------- **Version**: unspecified **Severity**: major

Simply test it: During the whole upload process 2 intervalls *per file* are not cleared: ``` var se = window.setInterval; window.setInterval = function (fn, t) { return se(function() { console.log(fn, t); fn(); }, t) }; ``` If you upload 50 files, this means 100 events fire (all the time) within 500ms, executing a function that is computing some numbers from the DOM (object position) and setting CSS. Not good for old machines and slow browsers. Culprit: /extensions/UploadWizard/resources/mw.UploadWizardUploadInterface.js ``` moveFileInputToCover: function( selector ) { //... this.moveFileInputInterval = window.setInterval(function() { update(); }, 500); } ``` -------------------------- **Version**: unspecified **Severity**: major

Simply test it: During the whole upload process 2 intervalls *per file* are not cleared: ``` var se = window.setInterval; window.setInterval = function (fn, t) { return se(function() { console.log(fn, t); fn(); }, t) }; ``` If you upload 50 files, this means 100 events fire (all the time) within 500ms, executing a function that is computing some numbers from the DOM (object position) and setting CSS. Not good for old machines and slow browsers. Culprit: /extensions/UploadWizard/resources/mw.UploadWizardUploadInterface.js ``` moveFileInputToCover: function( selector ) { //... this.moveFileInputInterval = window.setInterval(function() { update(); }, 500); } ``` -------------------------- **Version**: unspecified **Severity**: major