<resources> are filtered by test filters

With the following configuration I assume <resources> should get filtered by src/main/filters/* and <testResources> by src/test/filters/* :

<filters>
<filter>src/main/filters/dev.filter.properties</filter>
<filter>src/test/filters/dev.filter.properties</filter>
</filters>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<testResources>
<testResource>
<directory>src/test/resources</directory>
<filtering>true</filtering>
</testResource>
</testResources>

But all resources files end up being filtered by the src/test/filters/*.

Attached is the simpliest Maven2 proect reproducing this behavior.