HmIP DLD (the door locking guy) doesnt change its state after locking / unlocking

Heyhey
Ive got a Homematic IP Door locking guy (HmIP - DLD). Its connected via RaspberryMatic and Homematic(IP) Local to my homeassistant.
Since last Firmware update of this device (I think its the reason, but not 100% sure) (to version 1.4.12) the device doesnt return its state after locking and unlocking.
This means if its locked for example, I unlock and the state changes to “unlocking” and after unlocking is done (the device returns a beep tone) its state changes to unlocked.
But this unlocked doesnt occur anymore. The state stays at unlocking.
If I unlock again (via HmIP-KRC4 for example) the state changes to unlocked, but not by itself.
Anyone knows a solution for this? Ive been looking for the older firmware version, which should be 1.4.10 - but without any success.