The TabStrip is not working properly when:
- you hide one or multiple tabs
- then navigate with the keyboard(left/right or up/down arrows)
The content of the hidden tag is then showing during navigation while the tab stays hidden. On Chrome the hidden tab even reappeared!
To reproduce the error I've use the navigation demo of the TabStrip (http://demos.telerik.com/kendo-ui/tabstrip/keyboard-navigation) and added the following line
as advised in the forum to be able to hide tabs.