Hi,
Another bug with the non fixed normal vectors.
When we merge two objects with the Normal command panel opened, non fixed vectors orientations are changed :
https://i.goopics.net/ckyk2l.jpg
https://i.goopics.net/g2b43k.jpg
Problem doesn't occure when another command is active, so cancel the merging and remerge objects with a selection tool activated for example, and I hope this little can be corrected.
Bests regards.
JymmuMarco3D