Hello,
If you use more swim lanes with different colors in activity diagram, there will be rendered a big white space in the first and the last swim lane, in the same size as the activity flow paths from the other swim lanes (example below ...)
This does not happen if no color is used in swimlane : in that case, space is correctly managed (already corrected by :https://forum.plantuml.net/9288/issue-activity-diagram-swim-lane-whitespace-issue)
Best Regards
example :
@startuml
|#Lavender|RM ACOSS|
start
fork
:KICKOFF RM ACOSS;
fork again
|#AliceBlue|CP ou délégataire|
:KICKOFF CP;
fork again
|#Gainsboro|DEV CDS|
:KICKOFF CDS;
end fork
Stop
@enduml
