System Information
Operating system: Linux-5.4.0-48-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GT 630/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.138
Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-10-12 22:51, hash: rBdc71ad062408
Worked: (newest version of Blender that worked as expected)
Short description of error
I expected the two colors of the paint brush inside the sculpt mode to be switchable with the Ctrl-button, but they aren't.
Exact steps for others to reproduce the error
Open a sculpt session and chose the paint brush.
Determine two colors in the brush settings.
Start painting with one color.
Try to switch to the second color with Ctrl.
