Hotbar changing on its own, adding melding actions in place of melee actions?

[Deminia]

This has now happened to me three times on the same character, two different classes (Gladiator and Pugilist). Suddenly, without making any changes, hotbar 2 automatically removes three of my set actions, replacing them with three copies of the materia melding action. This seems to occur during an instanced class quest. I am not certain that the instanced quest is the cause, but it is the only time I have noticed this bug happening.

I don't typically set materia melding at all, and certainly not on a melee class. This has happened with my hotbar unlocked and also when it has been locked. I wasn't trying to make any changes to my hotbars at the time, nor was I in the middle of doing anything at all with materia.

The images show me turning in the completed quests in question and noticing that my action bars had been changed.





ISP: Xfinity Type: Cable
Date/Time when issue occurred: uncertain, NA server, EST Frequency: happened three times
Character: Deminia Brellenwind, Hyur F, Sargatanas, Gladiator (mid 20s, level synched) and Pugilist (50 but level synched), areas were first two times in Highbridge area of Thanalan, third time near Coffer & Coffin area of Thanalan
Solo
Not sure of NPC names/Monsters - several within instanced class quest