Yes you're right, that it seems that the problem occurs when closing the metrics window. I tried it again with a Chinese CID font, went to the Hanzi subfont, selected around 10 glyphs and doing control-k, and the window opened, and FF crashed when I closed it. I'm pretty sure though that FF has crashed on me before the metrics window appears (maybe in previous versions).
From: George Williams [mailto:gww@...]
To: Matthew Wallis, WorldAccent [mailto:matthew@...]
Cc: fontforge-users@... [mailto:fontforge-users@...]
Sent: Sun, 24 May 2009 23:47:07 +0100
Subject: Re: [Fontforge-users] CID metrics problem
On Mon, 2009-05-18 at 04:36, Matthew Wallis, WorldAccent wrote:
> There seems to be a problem in FF of selecting some glyphs in a CID
> font and doing new metrics window - it nearly always crashes. It's
> been like that a while actually.
I could not reproduce this. I did find a problem with closing such a
metrics view, but nothing with opening one.
Please give more precise instructions.