Issue with start menus and apps.

[RatB0Y68]

I have recently encountered a weird and unsettling issue.

 

I am using Windows 10, I open up the Start Menu, click on the Power icon and I find that the top option, Sleep, is permanently highlighted, but I am not even hovering my mouse on it.

Also, while it is highlighted I cannot click on it, it does nothing, the other options work but not that one. It gets odder still.

When I do put my cursor over it, the highlight box flickers and wobbles, in a very glitchy way.

Finally, this bizarre behaviour seems to have affected my other menus.

In the same fashion, the top option is auto-highlighted, cannot be selected and flickers/wobbles when you put the mouse over it.

This has me quite freaked out, I have rebooted my pc in safe mode and am running antimalware scans.

 

Anyone with a similar experience, please advise.

[RatB0Y68]

Update:

 

I think I found the problem.

 

I seems it was my Xbox One controller. Disconnecting it has apparently solved the UI bug. It is an old controller and the A button is broken.