Lights changed into switched instead of dimmed

[Just-inc-ace]

When I installed the integration all was working fine at first, now all of the dimmer entities changed into switched light entities, so not dimmable anymore.
Switching on and off works fine though.
{ "req_type":0, "req_sub_type":-1, "obj_id":"DOM#LT#6.1", "out_data": [{ "id":"DOM#LT#6.1", "type":3, "sub_type":4, "sched_status":"0", "status":"1", "powerst":"1", "value":"221", "bright":"221", "presenza_on":"0", "presente":"0", "auto_man_pid_dimmer":"0" }] }

So type is 3 and sub_type is 4 in MQTT.
As far as I understood this is sufficient to be detected as dimmer.

Any ideas what to try or where to look?