Purging desktop files let MiniMax reuse MiniMax_H3_00001_, so the next job returned the previous clip. Ignore stale events from the last job so a second generate cannot paste the first video over the new one.
The slider never left this machine, so deploy the generate UI with separate input/output hide toggles, reconnect in-progress jobs after refresh, and delete Comfy input/output files after they are saved to the library.
towsty