Operating system: Windows 10
Graphics card: Radeon RX 580
Broken: 2.79, 2.91.0
Worked: I don't have any older versions than 2.79 installed.
Short description of error
Most of the brushes show a warning if you attempt to access either their direction or gpencil_weight_tool attributes.
'WARN (bpy.rna): C:\b\buildbot-worker-windows\windows_lts_283\blender.git\source\blender\python\intern\bpy_rna.c:1479 pyrna_enum_to_py: current value '0' matches no enum in 'Brush', 'Add', 'direction''
I've attached a text file containing all the warnings I've been able to pinpoint in brushes.
Exact steps for others to reproduce the error
Open scripting window and type: