Fixed T27083
Summary:
additionally improved the sensitivity of the widget updates; e.g. thumpnails are updated if data changes. E.g. the segmentation.
Signed-off-by: Ralf Floca <r.floca@dkfz-heidelberg.de>
Test Plan: Code review, crash described in T27069 cannot be provoked any more.
Reviewers: kalali, kislinsk
Reviewed By: kalali
Maniphest Tasks: T27083
Differential Revision: https://phabricator.mitk.org/D241