Tomcat: Forced unpackWars = true?

Hi,

I just noted that in the server.xml that's created in IDEA's system directory
the setting for "unpackWars" is being forced to "true". I had set this to false
in the Tomcat installation because I had several problems with Tomcat not recognizing
changed .war files. Also it's quite a performance hit to unpack a .war file that has
just been created. I'd like to avoid that.

Is there a reason why the unpackWars setting is forced to true or is this a bug?

Sascha