Gwenview shows PEF raw images only black
I am using Gwenview under Gentoo Linux. After the last update from version 21.04.03 to 21.08.3 (and also with 21.12.0) Gwenview is not able to display PEF (Pentax raw) images anymore. These images are shown completely black. The error message is:
gwenview.libtiff: Error foo "Sorry, can not handle images with 14-bit samples"
This error message comes from the Tiff library, but I it is still version 4.3.0 which worked with the older Gwenview version. I don't know if this error is directly caused by Gwenview or by another library between Gwenview and the Tiff library. So please tell me what additional information you need. ORF raw images are still shown correctly.