New player here, sorry to bump an old thread but I'm still having this exact problem too. Has there been any kind of fix yet? Seems to randomly happen when depositing Meseta, just like mentioned. Its really annoying....
Stinks because I like to sell items a lot and don't like carrying Meseta with me in the field since I could die and lose it. Does it only happen after selling items at the shop and then depositing it? If its just meseta I find from enemies/boxes it should be fine, right?