[Newbies] Suspected bug when setting preferences

[squeak414 at free.fr]

The attached test case fails in a new sq3.10.1-7175dev08.06.1 image. (or
sq3.9.1-7075dev08.07.1.image).

testPreferenceSaving
	PreferenceBrowser new saveSelected.
	Smalltalk garbageCollect.
	self should: [SystemNavigation default obsoleteBehaviors size = 0]

SystemNavigation default obsoleteBehaviors inspect actually
has 400+ entries.

Most of the entries are BooleanPreferenceView class or PBBooleanPreferenceView
class, but also other classes such as Scrollbar, UIThemeStandardSqueak, ...

Am I right in thinking this is incorrect behaviour?

...Stan

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