We helped you find the solution for that, the problem is solved so why leave?
That was a little bit premature on my site, I admit (mainly having been frustrated with Manjaros's handling of Thunderbird; yet solved this). So back on Manjaro, fresh install. As for the full pathname in the terminal, I keep "pwd"ing for the time beeing.
...find a distro which suits each and every need you might have.
Found these, many years ago, Debian and Ubuntu, and successfully using them ever since
However, the "rolling thing" keeps me interested in Manjaro, and as you say, the "fun" overcoming obstacles, e.g. now, how to change this awful lot of black in Thunderbird and Firefox menus. No worries, I will work on this by myself - until I will need your help again, that is.
Thanks again to all for your comments!