Minimax H3 video jumps to maximum duration

What happened?
Randomly after setting a custom duration, after some time, the slider jumps to the maximum 14.4 point without any influence from me.

Steps to reproduce

1. Use Minimax H3 Omni
2. Set the scene
3. Try to set a video duration.
4. Click around, enhance the prompt, whatever else, wait...
5. At some point, the duration sets itself back to the 14.4s maximum.

Your system (OS / GPU / RAM / VRAM / etc.)
Windows 11
RTX 50590 (laptop)
64GB RAM
24GB VRAM
Maestro 1.8.1

Logs / full error output
none, not an error. just some weird glitch.

Paste the full log output here