Strange lockup with metacity

[Jonathan Corbet]

I'm seeing a strange problem with 22.0.91.1 on an x86-64 Fedora rawhide
system (22.0.90 had it too).  Almost everything works great, but any
attempt to resize an emacs frame using the window manager locks things
up.  Essentially, metacity grabs the mouse then stops, waiting for
something; the only way to get my desktop back is to restart metacity
from somewhere else.

This does not happen with any other application; it also does not happen
with emacs 21.  Clearly, emacs 22 pretest is doing something
differently, and it's creating weirdness.  I'm not sure how to try to
debug this, but thought I would toss it out there.  If there's further
information I could get to help track it down, let me know and I'll do
my best.

Thanks,

jon