I saw this comment a few posts ago:
I'll answer both of these, since they come up from time to time:
- If you zoom in on an area that lacks an "anchor point" of a drawn object, that drawn object simply will not be displayed. I'm not sure if this will ever be fixable. It isn't a bug; it's a simple reality. ProphetCharts needs a reference point.
- I don't think TOS has done their latest software release; when they do, the upside-down charts feature (and a number of other cool goodies, which I've documented in the release notes) will be there.