User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36 Steps to reproduce: Our team develops an ERP system where the end user client application is HTML5 application. Html pages that create application's GUI, use css flexbox attributes like: display:flex, flex:1 and others. Some pages are quite complex - I mean there is a lot of DOM elements using flexbox attributes as well as they are deeply nested inside each other. With this complex pages we are experiencing a serious performance problem - pages render very slow. Sometimes it takes several dozen of seconds, sometimes even hangs on application completely. On other browsers (Google Chrome, Internet Explorer, Safari and Opera) this problem does not occur. I prepared a test environment for you where this issue can be seen. It is available under the address: https://mars.commersoft.pl/H5/Default.aspx?LoadBaseSkin=0&CPG=C512F508-92F1-4F5D-933E-AC4F475829E5&CSIDENT=MAIN&WORKLOCAL=3&csB2BPortalsStart=6D162801-CC15-4C15-90A4-B9C0D0FB6E44&Skin=CePixel&ALLOWFIREFOX=1 To logon please use the following values - login: mozilla , password: M0zFl#xTeS% The logon page is quite simple and it works fast, but after logging in, the dashboard page is loaded which is quite complex and causes application freeze.
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User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36 Steps to reproduce: Our team develops an ERP system where the end user client application is HTML5 application. Html pages that create application's GUI, use css flexbox attributes like: display:flex, flex:1 and others. Some pages are quite complex - I mean there is a lot of DOM elements using flexbox attributes as well as they are deeply nested inside each other. With this complex pages we are experiencing a serious performance problem - pages render very slow. Sometimes it takes several dozen of seconds, sometimes even hangs on application completely. On other browsers (Google Chrome, Internet Explorer, Safari and Opera) this problem does not occur. I prepared a test environment for you where this issue can be seen. It is available under the address: http://mars.commersoft.pl/H5/Default.aspx?LoadBaseSkin=0&CPG=C512F508-92F1-4F5D-933E-AC4F475829E5&CSIDENT=MAIN&WORKLOCAL=3&csB2BPortalsStart=6D162801-CC15-4C15-90A4-B9C0D0FB6E44&Skin=CePixel&ALLOWFIREFOX=1 To logon please use the following values - login: mozilla , password: M0zFl#xTeS% The logon page is quite simple and it works fast, but after logging in, the dashboard page is loaded which is quite complex and causes application freeze.