Hi @rqxrqx,
I also have this behaviour for the most of my devices after each restart of my OH on RPi.
I am using a RPi based CCU3 from ELV with Raspberrymatic 3.65.11.20221005 if this is interesting here.
Commands can be sent from OH to the CCU, but no status is read back from the CCU to OH.
I had this throughout all 3.x versions of OH and currently I am on 3.4.0 release build.
It is not comfortable but for me it can be solved by disabling and enabling again the homematic bridge Thing after a restart of the OH system has been necessary (e.g. due to a shutdown after a power outage). After that all devices will be initialised again and the system works as expected.
BR
Jonathan