NPE for security aspects
Security aspects cannot be removed.
Reproduction steps:
- create a requirement
- right-click and select any security aspect (e.g. assets. threads. etc)
- go to the aspect specific editor/tab (e.g. Threads definition)
- press the “remove aspect” buttom
- see NPE in the java console
(from redmine: issue id 3380, created on 2018-04-12, closed on 2019-06-03)