Occasionally missing grid circles

[jgieseler]

Occasionally the grid circles that indicate distances of 0.5, 1.0, 1.5 AU (set by ax.set_rgrids) are not plotted. The problem can't (yet) be fully reproduced, but it is connected to the chosen date and time. It seems to occur more often when setting the current (or a future) date and early times in the day.

In this example, taken on 2021-10-20, 8:45 (UTC), the problem manifest when choosing 2021-10-20, 1:00, but it vanishes for 2021-10-20, 1:15 (i.e., set to 15 minutes later):

[jgieseler]

Question: Does this also occur in the Notebook version at https://github.com/jgieseler/solarmach ?