At last! Another clutter hater. I loathe that ugly visual that pops up and interferes with anything I want to do.Unfortunately, it seems we're in the minority here, though almost all other posts detail the non-usefulness of Tab Notes in practice!
If by "turn off Tab Notes appearing at the tab, they are NOT now and never have been turned off and I hate,hate, hate them. They add nothing but an unneccessary visual nuisance and interfere with using the mouse.