Runtime detection is not available when installed separately

Feel free to set the fix version accordingly, but this seems quite serious.
When you try to install only these three features on a clean Eclipse Indigo SR2 JEE:

JBossAS Tools
Seam Tools
JBoss Runtime AS Detector

finish the installation, restart Eclipse and then go to Preferences -> JBoss Tools,
there is no JBoss Tools Runtime Detection available.

The runtime detection feature can be seen in the installation details.