Thanks for reporting, @lmnjovreti. I still can’t reproduce this (Fedora Linux 34).
How did you install TeXmacs? Do you have LaTeX installed on that machine?
Could you please try running TeXmacs from the terminal and setting a temporary TeXmacs home path, so that we can exclude problems with your current profile:
TEXMACS_HOME_PATH=~/.TeXmacs.test texmacs