I created a single-selection dropdown custom field and filled it with values. I created a pie chart on a dashboard from just that custom field. It's showing two slices with the same name, "Other".

One has the actual count, is clickable, and leads to a good filter. The other is not clickable and the count is arbitrary (it's been stuck at 6 since I created it and I've made more issues since then). I think the total issues count on this pie chart is off, too, as it's including the bogus Other slice.

I have no idea how to diagnose this problem or how to fix it. I've recreated the pie chart and it shows up again!