I wasnt gonna report this because it was reported before but decided to go ahead.I had 2 dwarven swords fine and named them both Jerik's sword of fire and i've been getting my smithing up and for some reason decided to make 2 more dwarven swords and in the process the 2 named swords changed their names to dwarven swords fine.
qwert

Same issue here.
My enchanted "Ebony Fire Sword" also reverted to its original name "Ebony Sword" after while (probably after a reload or a new game session).

This happens when you dual wield two weapons of the same base type (dwarven sword) but with different names and/or enchantments. The favorites/hotkey system overwrites the name of one or both of them on an unequip action, usually when something else is equipped. When the item is placed back into inventory, its proper name is not preserved. In some instances, it can also lose its hotkey or be removed from favorites. This is a documented bug.

the 2 swords were exactly the same.
qwert