When changing the rendering style of an individual point cloud region in the "Properties" dialog I receive the following error once this field is clicked on:
Select a point cloud region. Press F11. Before clicking...

After clicking the drop down and selecting "colour coded elevation" for example

This is not a major thing in itself but obviously a bug. The more major and annoying thing is that, if you continue to use the program after this then I have experienced that it randomly crashes and you lose anything you have not saved. Also, the properties dialog box hangs up.