Bug on WTA

When I click on the new monitor link under the monitor's tab, by default it shows Add Monitor type as Servers, since that is at the top if the drop down list. Now when I scroll down the drop down list and select Web Transaction Monitor, it retains the parameter fields for the Server type monitor, such as hostname, subnet mask, polling interval, OS type. Additionally I am unable to type anything on the hostname/IP address field.
This is the same case when I select any other monitor type such as DB2 monitor, Websphere monitor, etc.and then go to WTA monitor. It retains the parameter format for the previously selected monitor type, and nothing can be entered on the hostname tab.
However once I select the URL monitor and them move to WTA, I am able to type on the hostname tab.
I presume this is a bug.