Whenever /testfor @p [[x=0,y=0,z=0]] (0 as an example, ignore the link thingy) is entered into a command block, it claims that the player is not found. This goes for anything, including usernames. Whenever the coordinates are taken out, it works just fine.
MC-34979
/testfor not working with coordinates
Resolved
Duplicate
0
Duplicate of MC-12239 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.