I've forgot it but I've also use Winaero Tweaker, but I didn't messed with nearly any of its options, espceially nothing to do with theme/colors/fonts changes there (only did these in StartAllBack since I knew I ganna use it for that from the start),
The other machine I've tested it on also got Winaero Tweaker, but can't tell if both use the same settings since I only used that app like once after I've installed the PC and rarely opened it afterward, and all of the changes I did there were mostly stuff like turn off Win/driver updates since it's more easier than open the services each time manually,
I will try to compare the settings between the two machines to narrow down if something is different between the two.
One last thing I've used but don't think it worth mention in this case is O&O ShutUp10++,
Both machines got it under the same settings, and I've used it to turn off some of MS spying stuff (Also I didn't simply let it used the settings it recommand since it bascially turn off nearly everything that got net connection to MS servers so I only kept it as minimum for the things I've want off),
But since both machines got it installed with the exact same profile settings, it not seem to be the culprit, consider how the other machine shows texts in tabs and buttons just fine on newer ver,
It may be worth to note that the other machine is a laptop with win11 home though, but aside from few buttons/options it lack comapred to Win11 Pro, I don't think it's really matter but mentioned it to be on the safe side.