Testing PR for align planar faces for PBR materials https://github.com/secondlife/viewer/pull/5347 in viewer 26.2 it appears to only align the base color textures and not the other textures normal/ORM.

Also side note reviewing the github notes it looks like it was only ever tested with a base color texture so it might be needed to add a full material (Basecolor/ORM/Emissive/Normal) to QA testing.