Wow.
Well this has been incredibly frustrating so I'm going to give up and just create my invoices on a Windows VM where it works and maybe look at replacing that font as my company logo font. Just putting this here for completeness
I went back through a number of versions as suggested above, downloading the full Office suite with Teams and following the full uninstall instructions (so removing the /Container and /Group Containers folders) at each point.
On a clean install of the 16.76 and newer packages the font wasn't available straightaway so those are 'broken'.
On a clean install of the 16.75 package (I also tried the 16.27/ 16.73/16.74 packages) the font was displayed so looks like latest package to use was the 16.75.
I then tried updating all the other apps except Word. After those updates, font now not displaying correctly.
I then uninstalled completely, re-installed the package and went through updating individual apps. Tried a couple of updates (excel/ teams) but font now not displaying correctly so I thought it might be the updates.
So back to a full uninstall and re-install at which point I discovered that on closing and re-opening word without any updates, font does not display correctly so the simple action of opening word then closing it after 1st use seems to stop the font displaying correctly & nothing to do with any updates.
The only thing I can think of is that it's something to do with the /container or /group container files.
In /Group Containers, on install, two folders are initially created:
- UBF8T346G9.ms
- UBF8T346G9.Office
then on opening word, another is created:
- UBF8T346G9.OfficeOsfWebHost
and all folders are modified as they now have the same modify date
Word needs to then be activated using my M365 account. This doesn't appear to impact any of those folders modified date
in /Containers, when word is opened for the 1st time, a folder called Microsoft Word is created
Once all this has happened I can use the font.
I then close Word.
UBF8T346G9.Office modified date changes and on re-opening Word the font doesn't display correctly
So it looks like something in that folder is causing the problem.
Next step was to take a copy of a freshly installed UBF8T346G9.Office folder, which contains a structure and no files other than an alias: UBF8T346G9.Office/Library/Application Scripts/UBF8T346G9.Office
If I then subsequently overwrite this folder after each use of Word, I have to reactivate Word and the font displays currently - until I close Word
I tried keeping just some of the registration& license files in the folder and deleting the rest but that doesn't seem to work. It's only on the first activation and use that I can use the font.
So that's me done on this lol.