Text objects cannot be grouped. TBS allows separate texts to be grouped but nothing happens. When selecting by clicking on a text object in the group, only that text object is selected.
This also means that text that is broken apart cannot be un-broken apart.
Please advise.
Indeed, text objects cannot be grouped at the moment - it is a limitation of the software. This can be added as a feature request.
Naturally broken apart text cannot be un-broken apart - this is true in any software, as far as I’m aware.