Yes, I tried by reinstalling & I realized the unexpected behavior of Menu bar of Q19.1 pro, but I couldn`t find that issue with Q18.0 lite, Q17.1 & Q18.1 std installed on same machine.
Check the highlight part in screenshot
did you try reinstalling Quartus 19.1 pro? --- Yes, I tried but issue persists.
Or have you re-download the installation files again to be sure? -- I checked by downloading & installing Q19.1 pro setup on different machine(Ubuntu 14.04.5 LTS) but there also I realize same issue as shown in my second post.
What do you suspect the issue might be? Was there any error popup, etc.. ---- no error for me.
I`ll be happy if someone from Intel debug this issue.