It would be great and avoid a lot of confusion for users if Affinity would disable all UI elements which are non-working (in specific situations), e.g.: blend ranges for mask layers (blend mode, anti-aliasing settings) Layer FX for mask layers refine button in selection brush tool for unsupported layer types (groups, masks, fill layers) is active Disable means gray-out and prevent clicking clickable elements which would open other UI elements which cannot work in t