Crash when more than two cases in switch statement

[Godsmith]

Steps to reproduce

1. Go to https://plantuml.github.io/plantuml.js/
2. Paste the following code:

@startuml
start
switch (test?)
case ( condition A )
  :Text 1;
case ( condition B ) 
  :Text 2;
case ( condition C )
  :Text 3;
endswitch
stop
@enduml

Expected

A diagram

Actual

An error message:

An error has occured : java.lang.NullPointerException
If there is no solution, there is no problem
 
Diagram size: 13 lines / 165 characters.
 
PlantUML (1.2023.2beta4) cannot parse result from dot/GraphViz.
 
This version of PlantUML is 512 days old, so you should
consider upgrading from https://plantuml.com/download
 
Please go to https://plantuml.com/graphviz-dot to check your GraphViz version.
 
 
This may be caused by :
- a bug in PlantUML
- a problem in GraphViz
 
You should send this diagram and this image to
plantuml@gmail.com
or
post to
https://plantuml.com/qa
to solve this issue.
You can try to turn around this issue by simplifing your diagram.
 
java.lang.NullPointerException
net.sourceforge.plantuml.activitydiagram3.ftile.Snake.getTextBlockPosition(Unknown Source)
net.sourceforge.plantuml.activitydiagram3.ftile.Snake.drawInternalLabel(Unknown Source)
net.sourceforge.plantuml.activitydiagram3.ftile.Snake.drawInternal(Unknown Source)
net.sourceforge.plantuml.svek.UGraphicForSnake$PendingSnake.drawInternal(Unknown Source)
net.sourceforge.plantuml.svek.UGraphicForSnake.flushUg(Unknown Source)
net.sourceforge.plantuml.activitydiagram3.ftile.TextBlockInterceptorUDrawable.drawU(Unknown Source)
net.sourceforge.plantuml.activitydiagram3.ftile.Swimlanes.drawU(Unknown Source)
net.sourceforge.plantuml.ugraphic.comp.CompressionXorYBuilder.getPiecewiseAffineTransform(Unknown Source)
net.sourceforge.plantuml.ugraphic.comp.CompressionXorYBuilder.build(Unknown Source)
net.sourceforge.plantuml.activitydiagram3.ActivityDiagram3.getTextBlock(Unknown Source)
internal.internal(Unknown Source)