Dear HerobrineLuv'er,
Thanks for reaching out! I'm an Independent Advisor and a Microsoft user like you. I will be happy to assist you in this regard.
Is your issue still persists or fixed after the restart?
It looks like the Taskbar thumbnail preview has been disabled. To enable it kindly do the following:
Start > Control Panel > System > Advanced system settings under Related Settings > In the Advanced tab click Settings under Performance > Check Enable Peek to Enable Thumbnail Previews > Restart your PC.
Please let me know if you need further assistance and keep me updated.
Source:
https://techcult.com/enable-or-disable-thumbnai...
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