[Bug] Plex keeps losing thumbnails for photo libraries.

Originally reported here.

This screenshot is of my photo library landing page:

You may notice that there are no thumbnails on these items. That wasn’t the case yesterday. Yesterday, it looked like this:

No matter how many times I set the thumbnails for these libraries, something eventually kills them. All of the thumbnails are locally-stored files.

No idea if it will help, but logs are attached.

I’ve had this issues for months now. No response as to why. This happens only to those folders where I manually assign posters/thumbnails. Those that are automatically assigned continue to appear. Also, does not happen in Plex web app, but in the Roku, Android, and Windows 10 apps. (And not consistently in those.) I appears to happen (to me at least) after a Plex update. Highly irritating.

Aaand, again. It doesn’t always lose all of them (all of these are manually configured, not automatic):

Ok, a PMS log would be useful when you notice them missing after browsing to them in Plex/Web. Sounds like there’s a bug around manually setting the images.

@keithah said:
Ok, a PMS log would be useful when you notice them missing after browsing to them in Plex/Web. Sounds like there’s a bug around manually setting the images.

Logs are attached to my May 5 post in this thread.

I’ve kept losing thumbnails for many months. I add them manually, but they keep disappearing after some time. Some stay though, but always the same onces.

I don’t know if this is related to this bug, or if it’s new, but watch the thumbnails for the 16MP, 10MP, and Slideshows folders as I resize the browser window in this video:

I initially saw this in Firefox. It also occurs in Chrome.

@keithah It just happened again, pretty much in front of my face. Here is another set of logs.

Please figure this out. This is really annoying.

This has been driving me crazy for months now.

My Plex server is on a Linux system in my home. I typically access it using Firefox, via app.plex.tv (as opposed to the local copy). A few days ago I (once again) re-established the posters for my photo libraries. Right now it looks like this:

When I’m at work, however, accessing my server via app.plex.tv using Firefox or Chrome or IE 11, it looks like this:

ANSWERS PLEASE. Server logs attached (again).

@keithah @elan @kinoCharlino

@beckfield, engineering is investigating this issue. Could you send us new logs with the latest PMS release (1.10.0)? Next time you see the thumbnails missing, check another client to verify that it happens to more than just one client, then post PMS logs (full zip).