Yes, there were changes in the latest firmware, and I updated all the Xiaomi / Aqara button device handlers:
[ANNOUNCEMENT] All Xiaomi / Aqara wireless button users
Hub Firmware 25.26 has been released for SmartThings v2 & v3 Hubs
The new firmware includes changes that “break” some functionality in the previous device handlers, but also allows for much improved functionality.
In order to fix the issues and add improved functionality, I have updated all Xiaomi / Aqara Button device handlers (DTHs). All SmartThings v2 & v3 Hub users are encouraged update to the newest DTHs immediately.
Please see this post for all details and links to the updated DTHs.
The code of these updated and improved device handlers is open source and free.
But if it has helped you, a coffee / beer donation is always very much appreciated!
PayPal: 
Venmo: @KeithPG