When doing a 'search and replace' on a document, I am limited to just one instance without closing the program. If I attempt to do a second 'search and replace' on the same document without first closing the program, the "search & replace" button is grayed out the substitution impossible.
It seems that this bug has already been reported earlier: http://bugzilla.xfce.org/show_bug.cgi?id=5831 In any case, it has been fixed in Leafpad since version 0.8.17, so I suppose it will be fixed in Mousepad when it is "refreshed" with new Leafpad sources.
I can't reproduce this bug in Mousepad 0.3.0. I believe it has been fixed during the rewrite.
It was fixed some three years ago. Current legacy/0.2.16 versions don't have this problem.
Closing as fixed.