A couple of times now (you'd think I would learn my lesson...) I've used the Clean Up Diagram option only for it to render my block diagrams completely unreadable. It's happened on two different systems now..
In this latest incident the flat sequence structure and the labels render as normal but the controls and constants are "smeared out" - for example, instead of being the usual small blue boxes the integer constants are rendered as very tall, thin rectangles. The data flow is completely impossible to discern. It's fascinating.
Anyone seen this before and know how to fix it?