Chart on a public dashboard not showing correctly on initial load

We have this public dashboard exposed via Redash - here.

The 2nd from the top, left-most chart isn’t displaying correctly when the page loads.

On load:

If you then change the parameter to any other in top left, and then change back to DeGods (the collection originally shown on load) you get:

Which is the correct version.

Seems like some sort of cache issue?

Why might this be happening and how can we fix it?