File loss/Overriding if move operation fails [Critical bug]

[mehanix]

Hi, this codebase is relatively old but it seems it is gaining some traction again.

I must report I remember a critical bug that sometimes the move failed in certain circumstances (I do not remember exactly unfortunately when)

I'm leaving this here in case someone wants to take a look and try to identify/fix it before I get to it. I noticed an increase in traffic and am now worried the app might accidentally cause data loss to some people.

I'm really busy with finishing my master's so it probably won't be very soon when I actually get to fix this so this would be a great first issue for someone new to Open Source.

Thanks!