In order to test the PR for JBIDE-26256 I installed JBT into Eclipse Photon. Now I wanted to create the HTML5 Project from Central. But when I click it, it only displays the Operation in progress window for a moment and then it disappears and nothing happens. The same applies for the Java EE Web Project. Other projects from Central work. I tried opening and closing Central and even restarting Eclipse, neither of those helped. Note that this worked ok in devstudio. I only experienced this today in Eclipse Photon + JBT 4.9.0.AM1 abridged.
I'm on Mac and I installed JBT from http://download.jboss.org/jbosstools/photon/staging/updates/ which currently contains the 4.9.0.AM1 bits.