Depending on your point-of-view these things can be useful or highly annoying.
I’m guessing these things disappear after a time but I’ve no clue when.
If you want to disable them the registry key is here:
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\EdgeUI]
“DisableHelpSticker”=dword:00000001
Download the reg file here: https://www.dropbox.com/s/phqj1drbc3k3419/win81disablehelpsticker.reg
