Ladon trims space characters around "&" in input string.

Hi,

I've used Ladon for a long time. This is pretty framework. Many thanks to the team for creating it.
Well, I got a problem with input strings which contain "&" character. As I said in the subject, I example:
-- Input string: "I saw Mary & Jane" --(call service)--> Ladon --(i get)--> "I saw Mary&Jane". two space chars around "&" were trimmed

I also get this problem with html string. In this case, space chars around some tags like "a, strong, span ..." were trimmed.
Would you tell me what happens? And how to fix this?

Thanks,
Leo