id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
17327	Class MapListSetting doesn't allow to store a TreeMap in preferences	GerdP	michael2402	"Is that intended? The method consistencyTest() uses 
{{{
#!java
            if (map.containsKey(null))
                throw new IllegalArgumentException(""Error: Null as map key in preference setting"");
}}}
which causes a NPE when used with a TreeMap no matter what the map contains."	defect	closed	normal	19.04	Core		fixed	preferences	michael2402