Windows 10: Windows Task bar doesnt show thumbnail preview for the app i hover my cursor on

so the other day i was just playing video games and then the next day i wanted to see who was talking to me on discord, so i hovered my cursor on the discord app on my taskbar and it didnt preview it, it just told me the name. How do i fix this ?


oh and yeah apparently this is a pretty rare glitch/bug because it isnt really popular problem on youtube

:)

 

No Task Bar (hovering) preview, no peeking, no full screen is on hovering over and clicking

When there is no window opened, hovering over taskbar app icons, a preview is shown, but on hovering over preview no full window is opened, and no peeking is done, and also clicking on that small preview, no window opened.

1. And whenever there is a window is opened then hovering over taskbar icons doesn't gives any preview of the window.
2. But it still opens window, on just clicking on task bar icons ( i.e. working fine ).

And when two windows of any app is being opened and if minimized any of them then you can not maximise that minimized window...???

• And when both windows of same app is being minimized then hovering over task bar icon of that app still shows those two previews, but clicking on any preview doesn't provide anything, and thus it all means after minimizing those two window of that app you
  can not recover any of the window.

Basically the problem is I'm not able to open window ( or make full ) from any task bar preview and the First (1.) one also of first paragraph.

 

no full screen preview when hovering taskbar thumbnail

Last time when I fresh install Windows 10 and whenever i hover my mouse cursor to multiple opened browser it show thumbnails, and when I next hover the cursor to that particular thumbnails it will show full screen preview as you might say peek. Now it doesn't
do anything anymore.

Can anyone help?

The picture attached is the preview thumbnail and when i try hover to the default Firefox browser it does not 'peek' into it anymore.

 

Icon preview on task bar

how do I get a preview when I hover cursor over task bar icon in windows 10?