In the Quick Menu's Avatar Details page, the items "D. BONE COMPONENTS" and "D. BONE COLLISION CHECKS" are merged into one.

Also in the Main Menu's Avatar Details page it says "D. BONE COLLISIONCHECKS" ("collision checks" in one word) whereas for the physbones it says "PHYSBONE COLLISION CHECK COUNT" ("collision check" is separate words (and also here it includes the word "count" which is kind of inconsistent)).

Tested only on desktop.