Hi, and thanks for your reply :) . That is all well and I understand what you mean. Is there a reason to why it successfully updates in the viewport before releasing the left-mouse button? Is that just a viewport thing, where it just works? It always bothered me that the desired results are always just out of reach. What…
Understand the command and what it's actually doing and why it fails, then alter your workflow or uv layouts accordingly. If you use cubes a lot, then I can see why this would become problematic if the default mappiing (inverted 'T' arrangement) was used. Maybe create a quick script to convert verts to edges, cut UVs and…