dot X11: nodes disappear on zoom or pan
I'm using dot interactively, and all the nodes disappear if any node is panned or zoomed off the left or bottom sides of the window. Cluster boxes and links remain. The nodes reappear if I move all the nodes back on to the window. But! But this only happens after dot re-reads an updated file.
If I open a file with "dot -Tx11" and move nodes off the side, it's fine. Once I change the contents, the nodes disappear.
This is on Ubuntu with version 2.38.0-12ubuntu2.