Some previews negative in lighttable

Hi everyone,

Oddly, some of my images appear as negatives in lighttable view. Those are dng, converted from Nikon nef. They work just nicely in darkroom and export fine as well, just the preview is inverted. This is darktable 4.0.1 on Arch Linux, by the way.

Has anybody experienced similar issues and if so, are there hints to fix this? Thanks in advance!

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yes, got exactly the same problem, with normal RAW 14-bit lossless compression files for Nikon Z7. Running 4.0.1 as flatpak under Fedora 37 KDE

Operating System: Fedora Linux 37
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
Kernel Version: 6.0.12-300.fc37.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 Ă— AMD Ryzen 7 PRO 6850U with Radeon Graphics
Memory: 30.1 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
Product Name: 21CQ000GUS
System Version: ThinkPad T14s Gen 3

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Is color managed thumbnails enabled? If yes, does disabling it help?

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Thanks for your input. The manual for darktable 4.0 states that

All thumbnails are fully color managed.

and there is no such option in the lighttable preferences. Am I missing something?

OK, I remember such an option, but it’s really not mentioned in the manual. Maybe it has been removed.

Shows my age: