I'm having an issue that of course suddenly changed without input. When I select text in an MTEXT object, the highlighted area does not show. The text is in fact highlighted as it can be edited or deleted. However, there is no indication of what is highlighted. Highlight setting is on 1. Changing that to 0 and then back has no effect. Changing the color of highlight selection has no effect. I changed display to WYSIWIG and then changed the selection color which temporarily fixed the problem. Now it doesn't show again though. That also created issues with displaying the rulers...