Why am I getting this strange visual artifact with Windows 10 menus?

I have one desktop where this thing happens. It's my email server that stays on for months at a time. I've been noticing that over time Windows 10 Start menu begins to show weird visual artifacts. (This by the way doesn't happen to non-Windows 10 user interface, to what Microsoft now calls "desktop apps".)

So take a look, this is how my start menu looked like today (I masked my location on the weather app, but the rest is unedited):



Note that I try to install the latest updates and don't install any software after everything was installed originally. Also if I sign out and then log back in this visual glitch goes away (for a while.)

How can I fix this?

dalchina said:

Hi, not seen anything like that, but my PCs are shut down overnight. Further, I normally don't use Win 10's start menu- it's quite incapable of handing my large nested start menu, as are all such Win 10 style designs.

These may be relevant, from the Tutorial section:
Re-register Start Menu in Windows 10 | Tutorials
Start Menu Troubleshooter in Windows 10 | Tutorials
Reset Start Layout in Windows 10 | Tutorials
Clear Live Tile Cache on Start in Windows 10 | Tutorials

Yeah, the same here. I don't use Start menu either. Unfortunately just to sign out or reboot computer you have to use it. But as you see that menu was also blank. So I had to use shutdown \r \t 0 from command line to reboot the system. (I think that's the command.)

At this point I'm just curious what's causing it? Is it some driver? Or some component that needs to be reinstalled?