In general it seems the voids and buckles problem is only seen at very very low temperatures. The AMOS-6 failure occured because the LOX was loaded too quickly after loading the helium tanks, without allowing the He to come up in temperature.

SpaceX was pushing the loading speed to expand the flight window. The update (and Ms. Shotwell a few months ago) indicate the short term fix for this is to slow down the propellant loading to allow the He to warm up a bit before LOX arrives... Which is a long way to say that it's likely other companies have not pushed the envelope far enough to encounter this voids and buckles problem.

The update also says they will eventually adjust their COPV construction to eliminate this problem and return to rapid propellant loading, but I doubt we'll hear anything about HOW they improve it. A not insignificant amount of SpaceX's "secret sauce" is in their composits manufacturing (case in point the enormous ITS LOX tank recently tested.)