I use the firefox browser and have bad performance errors in my Ext.Js and also in Sencha Examples (e.g. [here] ). Everytime I refesh the page and start hoving over the line chart (with trackMouse: true), or drag the panel it begins to behave odd (e.g. like the grey bars). How does it come? And how can I prevent this? snapshot3.png
Thank you for your quick response!
Yes it also appears unregularly in the test case as well. Not for the first time right after reloading but after a while of clicking on the lines and nodes. Is seems as it would have some delay in the performance but I am not sure about it.
I use Firefox 33.0 for openSUSE - 13.1.