"Cannot debug web facet" error

Hello,
I am using Intellij 9 with WebLogic 12(c).

I am able to deploy, run and debug my web application in WebLogic by using the run configurations in IntelliJ 9.

However, I keep seeing this warning in the run configuration itself:
Cannot debug Web facet 'web': debugging is off

Clicking "Fix" adds the following into weblogic.xml:
<jsp-descriptor><jsp-param><param-name>debug</param-name><param-value>true</param-value></jsp-param></jsp-descriptor>

This is not valid according to the schema for weblogic.xml and the deployment therefore fails.

Upon searching the forums, I saw this thread that indicated that the error had been fixed in IntelliJ 9:
http://devnet.jetbrains.net/thread/285525

However, I am still encountering the issue. The Warning seems to disappear and reappear on its own, and I'm not sure what I'm doing to cause that.

If I ignore the Warning, everything works just fine, however, as the other thread's author had put it - it's an annoyance.

Any help will be appreciated.