Washed out color cast on images processed in earlier versions - 5.0.0 Win 10

[europlatus]

Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

Image appears fine as thumbnail in the Lighttable but isn't processed properly when opened in Darktable.
issue is mentioned and screenshots provided on Pixls.us here: https://discuss.pixls.us/t/strange-cast-on-cr2-files-since-moving-to-5-0-0/47906

The file attached is a scanned negative, but I've found other strange casts on other images too that aren't scanned negs.

Steps to reproduce

Open image with attached xmp

Expected behavior

No response

Logfile | Screenshot | Screencast

dt github issue.zip

Commit

No response

Where did you obtain darktable from?

downloaded from www.darktable.org

darktable version

5.0.0 release

What OS are you using?

Windows

What is the version of your OS?

Windows 10

Describe your system?

No response

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

No response

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

[pehar1]

Cannot reproduce with fresh install of current master (5.1.0+169~gfb2228727e) on Ubuntu 24.04.

[wpferguson]

@jenshannoschwalm I get a similar look when I manage to create an "insane data" image reset. Last happened (for me) yesterday with 5.1.0+184~g47e044ff21, after #18275. Still got a couple of loops too, so it's not entirely gone but much better.

[jenshannoschwalm]

@wpferguson got it and working ... :-)