I've found some posts in old forums about the problem but they were left with no response.
When trying to navigate through the page using Tab key focus stucks on menu and there's no way to leave it except using mouse.
Is there any workaround for that?
Pressing the ESC key should close the menu and enable you to move focus on to the next element on your page. Does this work for you?
How can I treat navigation by tab through the menu? any CSOM handler for that or something else?
If you haven't done so, I'd suggest reporting this behavior along with your expected behavior to our developer support group (http://ko.infragistics.com/gethelp)
-Tony