What is your operating system and version (Windows 10, OSX Mojave, iOS 12 etc)?
macOS Big Sur 11.1
Affinity Designer 1.8.6 (trial version)
What happened for you (and what you expected to happen)
I want to remove "B" as a shortcut for the Pixel Tool, so it doesn't swap to Paint Brush Tool if I accidentally hit B twice.
Every time I open the Designer, Pixel Tool has its shortcut set to "B".
Provide a recipe for creating the problem (step-by-step what you did).
remove the shortcut "B" for Pixel Tool.
close Affinity Designer.
open Affinity Designer again.
Pixel Tool has its shortcut set to "B" again.
Saving the shortcuts as a ".affshortcuts" file.
Closing Affinity Designer.
Going to "~/Library/ApplicationSupport/Affinity Designer"
Replacing the "shortcuts.affshortcuts" file with mine.
Opening Affinity Designer.
The Pixel Tool is set to "B" again (it seems it's always reset to "B"?)
Any unusual hardware (like tablets or external monitors or drives that may affect things) or relevant other applications like font managers or display managers.
Second monitor ASUS, using HDMI cable
Wacom Intuos tablet
Did this same thing used to work and if so have you changed anything recently? (software or hardware)