The following two changesets have broken layout (at least it looks like layout...could be CSS or bounds) such that most complex text programs now fail.

rt:
changeset: 962:c6643233a1c9
date: Mon May 14 16:14:06 2012 +0200
summary: RT-16011 Need mechanism for PG nodes to know when they are no longer part of a scene graph

rt-closed:
changeset: 16043:a16204b346fd
date: Mon May 14 16:14:18 2012 +0200
summary: RT-16011 Need mechanism for PG nodes to know when they are no longer part of a scene graph

Ensemble is not scrollable
HelloListView doesn't display anything when switching tabs
FossilGame doesn't display the nodes
etc.

This is a promotion blocker.