I'm not sure what exactly is the cause of this, but I've noticed that I seem to get a lot of composite wallpaper images (all 3 monitor wallpapers combined into one image) saving into my pictures folder. I assume it's display fusion doing it, because it is the one app that is in control of my wallpapers. But it could also be something windows is doing ¯\_(ツ)_/¯.

I noticed it happening on Windows 10, but never got around to troubleshooting until now.

Windows 11 25H2 (26200.6899)
DisplayFusion

Weird, my edit didn't save. I'd like to mention I think it happens when I switch monitor profiles. I can see composites for when I'm in the 2 monitor mode, and 3 monitor mode.

Anyways, here's the debug info attached.

I do have stuff being backed up automatically, but only in protected folders. That does not include appdata. I'd have to maybe use process explorer to see if OneDrive touches anything in the appdata folder when DisplayFusion makes the changes.

Mmm, Site seems to be having issues, since it's taking a long time to post, and double posted.

I digress, I will note that it's not every time the wallpaper changes that it ends up in the pictures folder. I just changed the wallpaper now and didn't see a new one generated. The process monitor logs also don't show anything wonky, but I suspect I'd have to catch the bug in the act as it occurs.

I have DisplayFusion setup to rotate wallpapers once an hour I believe, so not sure how often it sees the bug.

Hello, I'm guessing you meant ?

I don't see anything in related to DisplayFusion.

I see the generated files there. As for the ones in Documents folder, they do go away if I delete them, and only return when the bug happens. Hilariously enough, looking through the file, I can see "versions" of it in my file history.

No, there's no actual bug that I'm referencing. But since this is unwanted behavior I'm classifying it as a bug. I don't know if it's DisplayFusion, OneDrive, or something else causing it, which is why I posted here to see if I can narrow it down. Since DisplayFusion controls the wallpaper on my device, it's the obvious choice for a culprit.

Let me see about disabling the wallpaper system in DisplayFusion and see if it occurs with Microosft controlling the wallpapers.

Did you ever discover what was causing this? I'm also experiencing this and can't figure out how to stop it.

Nope. The problem is, it's random on when it happens. I rotate wallpapers once an hour, and I rotate between two different monitor configs twice a day. I've started adding a timestamp into my wallpaper info tag to see the time it happens, but that's only step 1.

If I can figure out what circumstances causes it to trigger, or even get it to trigger myself, I could use PROC Mon to see what process is creating it. The only clue I can offer up now is theres a "TranscodedWallpaper" file that shows up from time to time. Maybe the team knows what this file is?

Here's the zip of all those wallpaper images, including the "TranscodedWallpaper" in a protected attachment upload.