Well, if the issue you're experiencing spans over so many different ArubaOS-Switch operating system driven Switches (all running latest ArubaOS-Switch 16.x software versions, up to latest released in each involved branch)...for sure Aruba/HPE will be able to help you in recognizing, diagnosing and fixing the problem.
For what is worth, ArubaOS-Switch operating system has its heritage on HP ProVision operating system so the fact you're experiencing an issue which never appeared on older HP ProVision software versions (considering the same exact Switches) means only that the impacted platforms are currently only those running latest OS implementations which embedding latest features (and not the oldest where features were less).
Cisco (IOS) and Aruba Wireless (ArubaOS), being completely different embedded operating systems used by completely different hardware appliances, can't be used for a direct like-for-like comparison as you correctly did with HP ProVision OS versus HPE ArubaOS-Switch OS.
Keep us informed.