Whenever I weight paint on certain bones, patches of weight will appear on other bones. I'll then remove those patches but patches will appear on different bones again. Why does this happen? :
Being able to display weight paint groups while editing bones — Right-Click Select
Bone Weight Artifacts In Unity With Rigged Character?, - Unity Answers
SOLVED] "BONE WEIGHT COPY" script Blender (v2.7) - Animation and Rigging - Blender Artists Community
Armature Deform Parent — Blender Manual
EBBAWT - Accurate weight painting with armature - Blender Market
Weight paint on bones blender 2.8 the right way - YouTube