Annoying white tab on side of screen! How to uninstall it?

[Android Central Question]

There is this horribly annoying white tab on the side of my screen. It's transparent and easy to touch and open so I am constantly opening it. Once open, it has a feed like social media stuffed with ads. Obviously a piece of junkware! But there is no way to remove it. No name to this thing either. Help!

 

[belodion]

Does it persist in Safe Mode?
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