Crash when placing a roadsign

[Pills]

Can't repeat it, happened once. We have no changes in our client in any of this callstack.

Code: Select all

java.util.ConcurrentModificationException
    at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1043)
    at java.base/java.util.ArrayList$Itr.next(ArrayList.java:997)
    at haven.Gob.gtick(Gob.java:216)
    at haven.MapView.draw(MapView.java:1659)
    at haven.Widget.draw(Widget.java:763)
    at haven.Widget.draw(Widget.java:768)
    at haven.GameUI.draw(GameUI.java:1097)
    at haven.Widget.draw(Widget.java:763)
    at haven.Widget.draw(Widget.java:768)
    at haven.RootWidget.draw(RootWidget.java:70)
    at haven.UI.draw(UI.java:221)
    at haven.JOGLPanel.display(JOGLPanel.java:495)
    at haven.JOGLPanel.run(JOGLPanel.java:578)
    at java.base/java.lang.Thread.run(Thread.java:834)