This is a bug where stamps' preview is always fire mode with deco. Even if the current display mode is not fire.
This has annoyed me a lot. When I copy a PHOT laser to somewhere I can't check if I have placed it wrongly. When I made a LCRY matrix (which is coloured black) and want to copy :D
it's neither a bug nor feature: this has been a part of tpt for a while. I also find it annoying though, especially when pasting lasers.
@minecraft-physics (View Post)
What is it then if it's not a bug or a feature?
I don't have a clue either, it's been this way since the earliest betas of the C++ rewrite as far as I can remember.
I'd hazard it's just the visual buffer for paste somehow not actually checking the stamp and just using the old data, especially since it corrects itself afterwards.