UKNOWN_FETCH_ERROR on a filter control

Hi, I see the following when I set a filter for a column with <100 unique values:
This won’t be gone after N refreshes and stays on the dashboard. Any option to show some default values or simply hide this control until it is not ready? How much time shall I wait until the values appear?

Currently you cannot set it to any other value.

And it all depends on the time you have time wait.

I can mark it as a feature request to change it to another title.