I have 2 bearings…one that came with my g5 and another that came with a grind machine that I bought a year ago…
The bearing that came with my g5 lasted only 2 days before something inside the bearing caused it to be extremely responsive…I switched my g5 bearing with my grind machine one and a week later the same thing happened.
I’d say play both bearings for a week or so then make a decision as to if it’s bad. I’ve seen a lot of bearings do this and nothing but play fixed them.