Thank you very much for chiming in. If I face an issue it's just an assumption, until somebody confirms it. Unfortunately the U11+ doesn't receive a lot of attention by the community, so often only a single user brings something up and tbalden has to rely on us for proper reports. Can't pronounce often enough how much I appreciate tbaldens work on a device, that he doesn't owns. I am amazed how tbalden achieves this level of stability and perfection without testing the kernel builds.
I was busy during the evening, just returned to my desktop, otherwise I would have debugged it earlier. Then it has to be Magisk related. Wondering which module is breaking Bluetooth? The only one that I could think of is crossbreeder lite, but that module doesn't touch anything connectivity related or I totally missed that?

Will start my research from there.
Have to ask tbalden for apology, wasn't a smart move to come to a conclusion without chasing my setup through a proper debug routine. 1.24 RUU.zip just booted up, will flash TWRP and Cleanslate 1.7.6 and edit this post afterwards. Still thinking about downgrading. That white navigation bar just breaks the esthetics of the UI.:silly: Tbalden is still facing that Google Play Services drain introduced with the December security patch, unless I find a proper 1.24 changelog with some convincing improvements in it, I'll just go back to the firmware build the device shipped with.