Up to version 5.2.2-RC4 automatically created fhem devices work fine.
After updating to the latest version 5.2.2 I get the following error messages:

Request Error, Please look in your habridge log: error {"type":"6","address":"/lights/1","description":"Error on calling url to change device state","method_name":"/lights/1state"}

The device-target-item is
{"url":"http://127.0.0.1:8088/fhem?cmd=set%20ta_Test%20","command":"on"}
and the log says
Cannot parse command to FHEM <<<"{\"url\":\"http://127.0.0.1:8088/fhem?cmd=set%20ta_Test%20\",\"command\":\"on\"}">>> com.bwssystems.HABridge.plugins.fhem.FHEMHome

Went back to RC4 and all ist working fine again.