Episode Thumbnails Not Working

My agent does this:

    episodeMetadata.thumbs[thumb] = Proxy.Media(image)(thumb)

The Metadata XML looks fine:

And the file 9ddbe99abd56beef22b54c46d711a5094cfb026c exists and is a valid image.

Yet, Plex still uses a still image from the video for a thumbnail.

I’m on the latest version 1.3.4.3285 on Linux and I know that this works on a different computer I use (no access right now so i don’t have the version number)

Anyone know if this is a known issue?

episodeMetadata.thumbs = Proxy.Media(data, sort_order=None)
url is the image url
data is the image itself.
There’s a known issue on lates versions: https://github.com/ZeroQI/Hama.bundle/issues/98

Yeah, sorry. The code I quoted is no the code I use. I simplified for the post. The actual code does use the image data in the proxy, not the URL.

Has anyone tried to contact the Plex crew about this?

https://forums.plex.tv/discussion/258570/heres-the-workaround-for-the-1-3-x-1-4-x-metadata-issue#latest
A plex employee said:

It was actually a code change to fix (Metadata) Preserve user edited text fields when unmatching and rematching a media file. (#4999) in the 1.3.0 release notes https://forums.plex.tv/discussion/comment/1305852/#Comment_1305852
We are working on testing a fix now.