Setting reliable poster frames started working for me. Huzzah.

The bug is that the poster frame is displaced by the number of frames where the in point of the original clip is placed. So if you place an in point at 00:00:02:01 for you subclip, the poster frame will be placed 2 seconds and 1 frame earlier than where you clicked. And if you set the poster in the first 2 seconds, unfortunatly you'll get the first frame everytime and there's no workaround.

When the poster frame is added on a subclip, it only works if the in point was at the first frame of the original clip. Poster frame for subclip doesn't work at all if the in point starts at the second frame and after.

still not solved

Poster frames are no longer working for me as well - I believe this started after the Nov update.

They do work for the original clips - but NOT for subclips. I was using them successfully for the last 2 versions and suddenly they stopped working. Using the right-click menu, the keyboard shortcut - nothing works.

Please - I’m begging you guys to fix this. It’s definitely a bug. It’s a vital, very basic function that should be working in any mature NLE, especially one that’s been around as long as Premiere.

This thread describes my issues exactly and has reports from many more people with the same problem: https://community.adobe.com/t5/premiere-pro/set-poster-frame-not-working/td-p/10562057?page=1

I agree. Why do we make subclips? So we can pull out takes and organize our scenes. What happens if they all take the first frame of the shot? It renders them fairly useless.

Please fix this.

Totally ditto on this. Bring this back.