I am having problems opening tiff files in Affinity Photo 18.104.22.168 (Windows Store version).
Upon dropping a file into the software it creates an error message (see tiff_error.png). The box pops up immediately, without any visible attempt at loading the file (no extended loading time or increased RAM usage). Just to clarify that it is not something with my PC or this specific file: I can open this image in Photoshop, GIMP and Krita at the same time (see opened_elsewhere.png) and still have 10+ GB of RAM left.
I have also attached a screenshot of my performance preferences, in case that helps. You can also download one of the problematic files on Google Drive: https://drive.google.com/open?id=1Sq0xRGierqJgkhw3mHicIiffurQuOsYf
I hope this issue can be resolved as it makes an otherwise extremely capable (and so much cheaper!) Photoshop alternative useless to me.