One of the big problems is that there is a bit too much clearance around the "tapered hat"
part which allows enough deflection for the too small gear teeth to lose their mesh. I was going to someday try a band of self adhesive teflon or high density plastic tape or maybe countersink some buttons to get a better fit.

It's crappy poorly designed third party part that wasn't designed by BMW.

The power fold mirrors still have the manual fold clutch/dogs or whatever you want to call them to allow the mirror to fold manually but the power mechanism isn't strong enough to take the pressure of the manual fold so I think that's where the trouble starts if the mirror gets hit or someone tries to fold it.

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1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)