Kendo mvc selenium tests rect is undefined?

I'm doin selenium test on kendo grid. When I change value of the dropdown next step is focus this dropdown with

action.MoveToElement(el).Click.Perform()

I did it several times and everything was ok, but now I don't know what's going on.

I testes it and every of these elements got the same error rect is undefined. I do this on modal with 2 tabstrips. On first tabstrip it's working but on second I got this... dropdowns are getting by XPath and checkbox by Id (even checkbox got this issue). I searched a lot but can't find solution.