How do I stop the multiple bag ui's?

I'm using evlui & tsm & adi

ElvUI also modifies the Blizzard bag interface. If you don't want to use that, you need to disable it in ElvUI.

This is not an issue caused by AdiBags.

I assumed not. I just don't know which addon to investigate. Should I assume if I tell elvui to use blizzard bag that will solve the issue?

Yes.