| I'm seeing a weird problem with trying to use current Firefox Nightly
| builds under my FVWM configuration, where some of Firefox's menus won't
| appear (or won't appear consistently). This seems specific to using
| Firefox under FVWM; under another window manager (Cinnamon) things work.
| Old Firefox Nightly builds worked fine, so something has changed in what
| Firefox is doing (which means the issue might be in Firefox or in FVWM).
For the record: this turned out to be nothing related to FVWM at all
but instead that Firefox Nightlies started breaking if your X server
lacks compositor support. The non-FVWM environment I cross tested on
coincidentally had compositor support, so I incorrectly attributed this
to a window manager difference.
My apologies.
(The Firefox people are likely or definitely going to revert this change,
since it turns out that plenty of people on Linux are using Firefox on
X servers without the compositor stuff that Firefox wanted. See Firefox
bugs 994562 and 1001234 for gory details.)
- cks
