Key frame to image wrong order

[enrico vittorini]

Summary of the bug:
How to reproduce:

ffmpeg -report  -skip_frame nokey  -i video.ts -vsync vfr  filename%03d.bmp
ffmpeg version 2022-12-29-git-d39b34123d-full
built on Windows..

I was trying to extract keyframe and convert them to images. The image order is wrong. image 02 contains the first frame of the video but is saved as second file. The first file (image01) is of a later frame