Potential Bug with SPLC and Idle Task Priority 2022.0.4

Hi all,
not sure if this is the preferred place to report potential bugs but i could not find anywhere else to do so!
We are using an AXC F3152 with Firmware Version 2022 LTS with PLCnext Engineer 2022.0.4 and recently we bought the SPLC addon. In ESM1 we have a few real time cyclic tasks and in ESM2 we previously only had an MQTT Program configured as Idle Task.
By replacing the PLC in the project with the PLC+SPLC variant a new SafetyProxyTask was automatically created in ESM2 and now PLCnext Engineer generates an “PLCN0023” Error stating my Idle Task needs a priority between 1 and 15. If i change the task back to cyclic, set a Interval and Priority and then change back to Idle Task all is good. But if i close the project (after saving of course) and reopen it, the error reappears and i have to redo the above!
Is there anything i have or could have done wrong here or is this indeed a bug?