Hi Richard,
I saw this comment here last night but was too tired to check it out, but boy am I glad I did today!
The problem is an Adaptable one ONLY as far as I can see. It stems from this particular CSS in Adaptable/style/menu.css where the min-width is 250px
It appears that the More Colour Font plugin is geared up to use the width that Moodle has as default and so has set this in the plugins style.css
.atto_morefontcolors_button .dropdown-menu {
min-width: inherit;
}
On top of this, it looks like Adaptable has set another CSS fix for ATTO with this CSS...
.editor_atto_menu .open ul.dropdown-menu {
min-width: 3.5em;
}
$plugin->requires = 2015051100;
$plugin->component = 'theme_adaptable';
$plugin->release = '1.2.3';
$plugin->maturity = MATURITY_STABLE;
$plugin->dependencies = array(
'theme_bootstrapbase' => 2014111000,
'block_course_overview' => ANY_VERSION
);