GWT UiBinder problems in IntelliJ 11.1 Ultimate

Hello Jetbrains:

I'm having some trouble with UiBinder support, anyone else notice the following problems:

Say I have 2 classes, SomeChildWidget and SomeParentWidget.

Say SomeChildWidget exists in my gwt intellij project and extends SomeParentWidget which exists on my classpath as a maven dependency.

SomeParentWidget implements HasSomeAttribute

and has both String::getSomeAttribute() and void::setSomeAttribute(String) methods.

When I use SomeChildWidget in a uibinder template file, for example:

<my:SomeChildWidget ui:field="myChildWidget" someAttribute="someCoolValue"/>

Intellij complains that someAttribute can't be used at that location yet gwt 2.5.0 handles the file without error in both dev mode and production mode. Have I stumbled on a bug; or have I misconfigured my project somehow.