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Fix missing removal of previously created observers.

Description

Fix missing removal of previously created observers.

Not removing those would lead to "dangling observer pointers"
(i.e. crash) in some use cases.

Details

Provenance
maleikeAuthored on Jul 28 2016, 3:55 PM
Parents
rMITKc94a602e9cdf: COMP: Merge branch 'bug-19832-fix-0mm-planarfigure-after-doubleclick'
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