possible issue: position id mismatch

[candysun202507-debug]

It seems that "-1" should not be used.

I checked the "start" num and compared to Pi05-pytorch code，if “-1” is deleted, the start num is equal to the start number of position_ids in Pi05-pytorch。

This problem causes the result that the error increases with steps increasing.

The problem may originate from that the pytorch model uses "-1"

[Tomorin523]

thank you for finding the bug, we also noticed that and will fix it in the next version