It's working properly, one frame is advanced and the position is
If I do 'd' to backward the rate and I do the same action advance_frame,
the previous frame is shown on screen but the position remains the same.
I can go back as many frames as I want, the display is correctly updated
but the position remains stuck at the position when the rate was inverted.
This is happening with multiple containers such as: webm, ps, ts, matroska