What steps will reproduce the problem? 1. Add to ListBox 2. Call ListBox.clear()

What is the expected output? What do you see instead? ArrayIndexOutOfBounds

What version of the product are you using? On what operating system? 0.5.4 Windows7

Please provide any additional information below. Related to previous issue? Seems to be a problem with internal indexes.

This is fixed with versions post 0.5.4.