I have purchased Affinity Photo 2 downloaded and running on my MAC. When I open an astrophotography tiff file to carry out some tweaks I find that there is a brightness difference when I switch from Photo Persona to Develop Persona. After editing in Develop persona and confirm develop the resulting image displayed back in Photo Persona is now darker than that shown in develop persona.
Editing standard camera DSLR images seem to work okay. As a test I tried to edit the same astrophotography tiff file in Affinity Photo 1 and all works okay.
Any suggestions to what may be going on?