Parser or printer sometimes skips comments

When a couple of single-line comments are followed by a
multi-line comment in a class, like this:

// Comment
// Comment

/**
* Different kind of comment.
* Comment.
*/

The multi-line comment does not appear in the formatted
file.

Attached is the convension (test.xml) I used, and a
Java file which reproduces the failure. I did not find
a workaround except to remove the single-line comments
from my source files.