The “Use Case Subject” symbol is not clickable

[Nik]

The “Use Case Subject” symbol is not clickable when a “Rectangle” or “Rounded Rectangle” element is in the background behind it. Other elements, such as a Use Case, remain clickable. What can I do?

[StarUML]

Hi,

Use Case Subject is always placed behind other elements. Since the order between different Use Case Subjects can be arranged, try using  another Use Case Subject instead of a rectangle.

Thanks,

2025년 7월 1일 화요일 오후 6시 44분 13초 UTC+9에 nikt...@googlemail.com님이 작성:

[Nik]

Hi, do you have an example für "another Use Case Subject" that works? 
For me it makes no sense that the arrangement of objects is given by the system and also I have no possibility to change the arrangement. What is the reason for fixing the arrangement? 

THX

[StarUML]

Hi,

After further investigation, it appears that the Use Case Subject is poorly designed. However, due to current backward compatibility issues, it is difficult to change it easily. This has been registered as a bug in the issue tracking system, and we will look for a solution to the problem in the future. Until then, we propose the following alternatives:

1. Use a Rectangle shape instead of the Use Case Subject. Currently, the Use Case Subject does not have a modeling meaning beyond drawing the boundary of the diagram. (In reality, it should be able to group and contain Use Cases like a Subsystem.) Therefore, by using a shape like a Rectangle, the ordering issue can be resolved.

2. Use a Package instead of the Use Case Subject. A Package can actually group and contain Use Cases, so it is semantically and visually more appropriate. (This method is more recommended.)

We will inform you if there is any progress in resolving the issue.

Thank you.

2025년 7월 2일 수요일 오후 5시 9분 50초 UTC+9에 nikt...@googlemail.com님이 작성:

[StarUML]

Resolved in v6.3.4.

Thank you,

2025년 7월 2일 수요일 오후 10시 22분 24초 UTC+9에 StarUML님이 작성:

[Nik]

It works 😊 

THX