I actually installed 6.6 just now and it still works fine for me, so I don’t think it makes a difference:
user@host ~> flatpak list | grep org.kde.Sdk
KDE Software Development Kit org.kde.Sdk 6.6 system
KDE Software Development Kit org.kde.Sdk 6.7 system
user@host ~> flatpak list | grep net.xm1math.Texmaker
Texmaker net.xm1math.Texmaker 6.0.0 stable system
Especially since you’re no longer getting the error about missing the SDK…
Anyway, thanks for checking. If you want to try again after removing 6.6 go for it, but I don’t think it’ll make a difference…
I’ve got nothing else to suggest, but it’s an interesting case. Thanks for checking.