20.03 kernel panics during boot, but continues without WiFi

After upgrading my small laptop to 20.03, I do get some kernel panics during boot, which seem to be related to my WiFi.

Though I have no clue how to solve it, and I do not want to buy the next USB WiFi, as it is always gambling if it works at all, and it seems that most are based on the same RT chip anyway…

Can someone of you give me some hints?

(PS: enabling internal WiFi is not an option, has it seems to be defect and has an effective range of not more than ~2m)

After a 10 day holiday I was finally finding some time to experiment with this issue and solved it by setting boot.kernelPackages = pkgs.kernelPackages_4_19.

It just seems as if rtl8192eu (as in nixpkgs at least) is broken for 5.x.

Is this something I should create an issue? Maybe even try to make it a blocker for 20.09?