When I enchant a gem, it enchants others with the same property. I’ve also found some gems missing some properties I don’t remember disenchanting, so something weird is going on here.
The bug could be related to a bug report I made awhile back in how the game takes you to the bottom of the list of that current spell gem found in a chest. Compared to the exact spell gem with the properties found in a chest.
Found the old link.