@Ark74:
I realize this is a rather lengthy thread, BUT...
My reply which is directly above yours is clearly marked as the solution.
Related side-note:
As there is no really great way to use 2 totally separate iterations of TB - it continues to amaze me just how well that my chosen, older version of TB Portable continues to work via WINE.
And silliest of all IMO=>
Indicator Applet Complete always shows an email thing for the installed TB, which notifies about...absolutely nuttin' !!
(In 20.04.x that now works, but I ain't going there yet.)