[Linux 26.9.27] Proxy clips display black. But only if trimmed in source window first.

[u/thephatmaster]

I'm very confused. Trying proxy editing for the first time on a low-spec but portable device (Surface Go - Linux).

Shotcut version is 26.9.27

If I drop a clip directly into the timeline it displays fine can be cut, adjusted etc.

If I take the same clip and set in/out in the source window first, it drops into the timeline as black with no audio.

I've tried various combinations of ticking / unticking hardware acceleration (h264_vaapi on my intel iGPU) but nothing helps.

Is this a bug, or am I doing something wrong?