find -printf '%H %P' misbehaves with multiple paths

When asking find to show the starting-point under which file was found (%H) followed by the file's name with the name of the starting-point under which it was found removed (%P), it computes the "starting-point" for the second directory incorrectly.

Example: 
$ mkdir dir1 
$ mkdir directory2 
$ touch dir1/foo 
$ touch directory2/bar 
$ ./find dir1 directory2 -printf '%H %P\n' 
dir1 
dir1 foo 
dire 
dire ctory2/bar 

The expected output is: 
$ ./find dir1 directory2 -printf '%H %P\n' 
dir1 
dir1 foo 
directory2 
directory2 bar