Sorry to hear you are having trouble.
I assume you both going into taskview and seeing that, yes?
I am not seeing it in taskview on the insider box I have with TouchTask and Start10 installed:
how do know if is a stardock app because never saw before but now i do after installing touch tasks and if click on aaaaa weird box it opens up the side bar from touch tasks the aaaa box shows up on the window 10 touch pad swipe shortcut i really dont know the name of it
Can you post a screenshot of that - video would be better. You can upload a video to a cloud service (GoogleDrive, OneDrive, DropBox) and post a shared link here.
Stardock Support Manager