Why windows 10 taskbar doesn't show thumbnails of some programs?

Question

Windows

I don’t know what the problem is, after reinstalling dozens, I ran into such a problem
on the photo, the sublime text was launched:

Answer 1

Already answered in a similar question. If you installed the creators update, then this is normal. They did not finish them, they remake them. There, in addition to empty icons, there are about a dozen empty programs with "hello world" as a blank. To make it clear, find the wireless display media viewer program, we will find out whether it is a bug or a feature on June 13th.