[BUG] Support line stiffness bug

Dear Sofistik team,

There seems to be a bug related to the stiffness of support lines. If I want to give a support line a varying stiffness along the line I can use the factor at start and end of the support line:

However, this is not correctly applied if there is another support line crossing the initial one:

I have greated a simple example and attached the files:

Support line bug.sofistik (23.1 KB)

Support line bug.dwg (44.5 KB)

The sample files are created with Sofistik version 2025-8. However, I also tested that the bug exists in version 2026-2

With best regards,

Martin