How to report a bug in the Quartus tool?

Thanks for attending to this.

"Unfortunately" I am not longer able to recreate the problem in Quartus 18.1.0 Build 625 09/12/2018 SJ Lite Edition, so for some reason my Quartus installation handles the construction now. The problem was originally described in:

https://stackoverflow.com/questions/52622535/difference-between-process-and-vanilla-vhdl/52622723#52622723

where Quartus made the error:

"Internal Error: Sub-system: BPM, File: /quartus/db/bpm/bpm_hard_block_util.cpp, Line: 3458 ... Quartus Prime Information ... Version: 18.1.0 Build: 625 Edition: Lite Edition"

Back when I initially looked into the problem I could recreate the error several times, and it only occurred when the special construction was enabled.

But I have attached the the project that originally caused the problem anyway, in the file "SO_52622535_FF_by_concurrent_assign__Intel.zip".

I consider this issue closed, unless I encounter the problem again.