Loss of exif data between Darktable and GIMP

Processing
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#1

I run Darktable 4.2.1 and GIMP 2.10.34 on OpenSUSE Tumbleweed. Recently I have seen exif data lost between the two. In brief:

  1. Open JPEG in GIMP - full exif data visible. Export to JPEG - full exif data retained.
  2. Open RAW (NEF) file in Darktable - full exif data visible. Export to JPEG - full exif data retained.
  3. Open RAW (NEF) file in GIMP - auto opens Darktable - full exif data visible. Close Darktable - auto transfer to GIMP - zero exif data visible. Export to JPEG - no exif data.

I cannot find any settings that change this behaviour and I cannot be sure exactly when the loss of exif data started but the problem was there in GIMP 2.10.32 and Darktable 4.2.0. I also know that photos processed as in para 3 above in August 2022 did retain full exif data whereas those from October 2022 onwards had no exif data.

I would be very grateful for any suggestions on how to retain the exif data throughout process 3 above.

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#2

It seems this is a known issue but tracking your post nevertheless as it bugs me as well.