[umbrello] [Bug 407195] New: implementation/realisation association depends on class name

[Michael]

https://bugs.kde.org/show_bug.cgi?id=407195

            Bug ID: 407195
           Summary: implementation/realisation association depends on
                    class name
           Product: umbrello
           Version: 2.24.3 (KDE Applications 17.12.3)
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: umbrello-devel at kde.org
          Reporter: meisterlich at gmx.eu
  Target Milestone: ---

Created attachment 119830
  --> https://bugs.kde.org/attachment.cgi?id=119830&action=edit
sample project with the described class and interface names, that can be used
to reproduce the issue

SUMMARY
the implementation / realization association can only be set on classes that
are listed after the interface in the tree view (sorted by name)

STEPS TO REPRODUCE
1. extract attached java code
2. import *.java files from subfolders of src/main/java  
3. drag interface QuakVerhalten from tree view to class diagram view
4. drag classes Quaken, Quietschen, StummesQuaken from the tree view to the
class diagram view
5. check association arrows. only the classes that come after the interface
have the implementation arrow. the class Quaken does not have the realization
arrow. When drawing the association manually and double-clicking to edit the
association, the Realization association is not available in the combo box.  

OBSERVED RESULT
not all implementations of the interface QuakVerhalten are displayed with the
correct realization association. The classes with a class name that is before
the interface name can not have the realization association. Only after
renaming the classes, the realization association can be used.

EXPECTED RESULT
All classes that implement an interface should show as realization of the
interface regardless of their name.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I also tried to reproduce this issue by manually creating an interface test and
implementing classes atest and ztest, but I could not set the realization
association at all. If this is a usage error, I am extremely sorry.

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