Thread watcher thumbnails getting copied

[ghost]

A thumbnail from one thread can apply to others added later
Example:

Tested on v4.13.6-c832bc44 on a Samsung Note 10 Plus

[Astridchan]

Also happening in catalog

[ghost]

Also happens in threads

[debagos]

I can confirm this bug.
Furthermore sometimes when images fade in, they keep a slight white overlay. I mean they won't become fully opaque.

[lg188]

This only happens to me in catalog and only when scrolling down after a while. So the threads are loaded at refresh, and images when you're scrolling to them. What if a thread gets removed or it everything shifts towards page 10, but the threads don't get the same refresh.
It makes sense to not load all images at once so you can't just make it fully synchronous. I'd say do an extra check if the image fits the thread.

[Adamantcheese]

Workaround: Disable embedding. Seems that my understanding of how to coordinate PostAdapter and async updates from EmbeddingEngine is incorrect and is probably causing the issues of duplicate/incorrect/invisible images. If someone more knowledgeable on this stuff than me could help that would be appreciated.