Schematic is not rotating the schematic regardless of size or .nbt or .schematic current version Below.
LunatriusCore-1.12.2-1.2.0.42-universal.jar
Schematica-1.12.2-1.8.0.169-universal.jar

This was tested in a vanilla pack and it worked appears to be an issue with the modpack Sevtech Ages one of the mods or multiple are causing the issue

Holding shift works, kinda.

Well is there any updates to this issue it is still occurring on multiple modpacks I'm trying and in a vanilla version as well

I should have clarified, holding shift while pressing the rotate/flip buttons makes them behave as expected.
Still an issue, but in the mean time it should still be semi functional at least with that method.