Part of: https://projects.blender.org/blender/blender/issues/128066 Adds a "Filter by Active Tool" option for the brush asset shelves, enabled by default. If enabled, the asset shelf only shows brushes matching the brush type of the current tool. If the general "Brush" tool is active, only brushes that are not covered by another tool are displayed. The popup brush selector always shows all assets. The option is stored in the Preferences, toggled in the "Display Settings" popover of the asset shelf. Note: This is committed to the 4.3 release branch, which was discussed in advance. Pull Request: https://projects.blender.org/blender/blender/pulls/128450