Html menu offset after window resize

we are using kendo angular 2 splitter,
when using it, if I resize the splitter, the location of the HTML right click menu is shifted,
if I just resize the window the menu is in the right location.

invalidating the layout dows not help

any ideas?

Does it help if you call Diagram.requestUpdate after the resize? Resizing Diagrams -- Northwoods Software

Sorry, tried it now, and it does not help

Could you please help us reproduce the problem?