I am using Affinity Photo 2.0 on my Surface Book 3 under Windows 10 Business with german and the american keyboard layout.
While the square bracket for changing the brush size works fine with the american layout ("ü" and "+" on a german keyboard), something weired happens with the german (ALT + 8 and ALT +9). As long there is no layer added, ALT + 8 and ALT +9 works but does not provide visual feedback while changing the size. If some layer are added, ALT + 8 and ALT +9 does toglle between the layer. Changing the brush size with the american layout still worls fine with "ü" and "+" on a german keyboard, even if layers are added.
The video shows the description in the same order
2022-12-28 - 02.MP4