/clear command doesn't take into account the [MaxCount]. You either clear 0 things or all of them. If you have 64 stone and do /clear 1 0 1 then it clears all 64 stone as opposed to just 1 like the command format says.
MC-44400
/clear does not respect "max count" when above 0
Resolved
Fixed
2
Confirmed. As stated by Dinnerbone, a value of -1 would select unlimited blocks, so this certainly isn't working as intended: https://twitter.com/Dinnerbone/status/421323155941392384