I have a small problem with the layout of a sheet metal piece. Usually, when I put my unfolded part in the unfolded drawing, it remains well unfolded, even when we work on the 3D again.
Currently, as soon as I touch my 3D, my part goes back to the folded state.
I have this problem from time to time, personally when it does this to me I delete the "flatpentern" configs (to do this you have to quit the drawing first)
then I do a unfolded state, sometimes it works... otherwise I recreate the part or the function... (I'm tinkering with what^^)