I Installed fresh ubuntu budgie 19.04 in VirtualBox to test and also have this same. Minimal install, updated, installed also VirtualBox Guest Additions.
How to reproduce:
Work time (min): 5
Brek time (min): 1
Enabled Show notifications
Disabled Smart resume
Effect: Coutdown message
Wait for message then lock the screen. After 1 minutes screen will be unlocked.
This same effect if we lock screen before Take-A-Brake message.
Also for all Effect it is this same.
Yep, I can reproduce. The countdown window production/countdown unlocks the screen. I’d definitely consider that a lockscreen issue though. Nevertheless, we can probably fix it easily for this occasion.