Understood.
Unfortunatly the bug reporting is asking a lot of questions and I need to provide the armbianmonitor ourput which is not required at all.
Please take the solution given as a hint to fix https://github.com/armbian/build/blob/master/packages/bsp/common/usr/lib/armbian/armbian-truncate-logs
I will mark this as solved because my solution given above works for me (and maybe others).