I just got the mobile Dicey Dungeons, and found a bug during my first playthrough with the Inventor. On Floor 4 I fought Loud Bird, they weakened my upgraded Flamethrower several times. I used the weakened Flamethrower near the end of the fight. At the end of the fight I leveled up to Level 5 and wanted to copy equipment, but saw my Flamethrower had lost its upgrade. This persisted after the fight.
I just got the mobile Dicey Dungeons, and found a bug during my first playthrough with the Inventor. On Floor 4 I fought Loud Bird, they weakened my upgraded Flamethrower several times. I used the weakened Flamethrower near the end of the fight. At the end of the fight I leveled up to Level 5 and wanted to copy equipment, but saw my Flamethrower had lost its upgrade. This persisted after the fight.