So an update: I again removed the Wiz bulbs that again showed up as (offline) for some reason, deleted the button controllers, the groups, and even removed the switches entirely and readded them to start from scratch. I don't know if there is like some sort of hidden setting not readily visible on the device settings page when the Zooz Zen Advanced Driver is active or whatever, but I went parameter by parameter to compare each setting with the Office switch that was good and doing what I wanted it to with the Master Bathroom switch that wasn't. But after having excluded and reincluded the switch, remaking the bulb group again, and remaking the Basic Button Controller command again, it is now working for all 3 switches, and commands to all 3 switches are now showing similar event logs when the press the switch buttons, as compared to the previous log screen images I posted. So that's a big win so far.
What's yet to be determined is if the Wiz Integration app will get mad and pout again and forget some of the Wiz bulbs and settings (name, label, room assignment, etc.) and if so, what that will or wont do to the functionality of the group or the button controller. Fingers crossed that everything just remains stable, but as of now the buttons on all 3 switches/in all 3 rooms are working as expected.
