washed out colors after returning tiff from GIMP

Is there an existing issue for this?

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

Describe the bug

1. Used script "external editors"

2. Exported tiff/adobergb to "collection"
   after opening in darkroom it has input "embeded color profile"

3. tiff opened end edited in GIMP and overwrited

4. After returning to dt appears strange colors. afetr opening in darkroom it has input color profile - sRGB

5. After changing to AdobeRGB - colors are ok

6. After changing to sRGB - colors are little different than AdobeRGB but not so as in point 4

Steps to reproduce

Described above

Expected behavior

No response

Logfile | Screenshot | Screencast

No response

Commit

No response

Where did you obtain darktable from?

I dont know

darktable version

5.0.1 AppImage

What OS are you using?

Linux

What is the version of your OS?

Kubuntu 24.04

Describe your system

Just after exporting to collection

Embedded color profile

After returning from GIMP

sRGB

AdobeRGB

sRGB, but totally different look

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

nvidia, 550

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

No response

Start by reproducing the reported external-editors workflow with a TIFF exported as AdobeRGB, edited and overwritten in GIMP, then returned to darktable. Compare the embedded profile and displayed colors before and after the round trip, using the screenshots and version details in the issue; the issue names no source files or tests, so done requires narrowing the cause and defining the expected profile handling.