Hoi Johan,
On which subpage or row or column I should check your issues... I need the exact location of the "broken" Text addon. This will help me detect & fix it.
Updating SPPB is always an adventure with surprises at every turn.
I could say this same for almost every software, also from Microsoft or Joomla team. Of course, this is not an excuse, but sort of a life joke from the IT sector.
Note that Update =/= Upgrade - and you made probably upgrade from older 3.x or 4.x version, am right? So some of issues could happen, that's the risk that we all have handle ;/