I recently updated to Affinity Photo 18.104.22.1684 from 1.6.5.x through the Windows Store and now every image that I open, whether it's an *.afphoto, DNG, JPEG, PNG etc., opens way too dark. Documents created in previous versions are also rendered way too dark but are exported with the right colours and brightness, while new documents result in overly exposed images, more like as if the gamma went through the ceiling.
The samples available in the Welcome screen also seem to not match the snapshots available on the Windows Store. From the same snapshots I also noticed that the icon for the Photo persona also seems darker. The "Color" panel also gets way too dark.
Windows Store snapshot:
I tried running the trial version of Affinity Photo 1.6.5 (got it from the Downloads page) and the problem now seems to happen there as well
My device is the Dell XPS 9570, running Windows 10 1903 with Intel UHD Graphics 630 (driver version 25.20.100). This issue also affects Affinity Designer but every other app on my system works just fine.