Weird success/fail judgment on battery_try with Pi0.5

[trinhhongdung]

Hi, we tried running Pi0.5 on battery_try, and the success checker looks a bit weird.

Some rollouts look successful but are marked as failed. Some others look clearly failed but are marked as successful.

Examples from our local runs:

episode19_success.mp4

episode13_success.mp4

episode11_.mp4

episode1_.mp4

Is there any known issue with the battery_try success condition? Or is the checker using some hidden object/state criteria that are not obvious from the video?