Well i installed just the newest Beta of Affinity Photo .1.7 0231, and looked at the Changes.. Affinity even didnt mention it there i think..
But very very helpful and important for me was a very tiny shortcut missing... additiv in the Layermanager select pixelselections.. So Serif listens to us..
Shortcut is in German:
STRG+Shift+ Leftmousebutton click.. / or : cmd+shift+ LMB klick..
this tiny shortcut will reduce selectiontimes on big documents with many masks where you all the time have to select many layers, (in Visualisation compositings of Architectural visualisations for example) , enormously..
So many many thanks..
But ! i cant find a way to deselect from a Selection.. this is still missing, maybe this could be implemented too ?