Running Chrome 71.0.3578.98 here, noticed that Ext.Net pages with a lot of TabPanels and nested controls seem to have become slow as far as of UI snappiness is concerned, before Chrome 71 we could switch between the tab panel pages almost instantaneously but now there is a good 2 to 4 seconds delay doing that, the app itself was untouched and the issue happens on different computers running the latest Chrome update.

C# ASP.Net -> Ext.Net 4.5 -> Intranet

Thank you