Public bug reported:
I maintain and update a GTK2/3+ theme (http://winxp4life.tk), and with
the latest version of GTK3 in Ubuntu 22.04, my theme no longer works due
to a segfault caused by this rule:
.mate-panel-menu-bar {
background-image: -gtk-gradient (linear,
left top,
left bottom,
from (#3168d5),
color-stop (0.15, #4490e6),
color-stop (0.30, #235bd9),
color-stop (0.90, #2562de),
to (#1941a5));
background-color: @selected_bg_color_top_menu;
padding: 0px;
color: @bg_color;
text-shadow: none;
}
If I remove the background-image property, the theme works and the
segfault doesn't happen. It appears that any -gtk-gradient set on
background-image for .mate-panel-menu-bar doesn't work and causes Mate
to segfault. I have to change the theme and restart to get things to
work again.
** Affects: gtk+3.0 (Ubuntu)
Importance: Undecided
Status: New
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Desktop Bugs, which is subscribed to gtk+3.0 in Ubuntu.
https://bugs.launchpad.net/bugs/2004432
Title:
GTK 3.2+ Theme mate-applications.css: segfault libcairo .mate-panel-
menu-bar background-image: -gtk-gradient
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