Last moment of video missing

Hi Bitmovin community and thanks for a great product!

We’re implementing bitmovin player right now - and have produced a test video of 128 frames @25fps in FFMPEG.

In the browser, this video stops at the end, on frame 128 (the video is the frame number text)
In bitmovin player, it stops on 127. Even on the stream test demo

What’s going on here, can anyone explain? Thanks.