Weird layout of sequence flows starting from boundary events on activity corners due to additional invalid waypoint

[torge-hmn]

Describe the Bug

When adding a sequence flow starting from a boundary event on an activity corner to an element below, the sequence flow gets aligned weirdly because an additional waypoint is added inside of the element:

Steps to Reproduce

1. Add a boundary event to the corner of an activity
2. Add an element below the activity
3. Add a straight sequence flow from the boundary event to the element below

Expected Behavior

The sequence flow should connect in a straight line between the boundary event and the element below without the additional waypoint.

Environment

• https://demo.bpmn.io/
• Browser: Chrome 131
• OS: Windows 11

[torge-hmn]

Addition:

The same issue occurs when the element is on the right or left of the boundary event not only below.

EDIT: Second addition

The issue seems to occur in all cases where the center coordinate of the starting boundary event is within the bounds of the connected element on the same axis.

[barmac]

I can reproduce it. Thanks for reporting.