I have a number of filters that include tags that define location (e.g. Sydney, Melbourne). I recently re-organised them a little and that included editing the title of the tag. Apparently the filters are still attached to the *name* of the tag, meaning they're all empty now. So my suggestion is: filters should understand that sometimes tag names change and ensure they continue working even if that happens. Thanks.
Thank you for bringing this issue to our attention. It does feel like the filter should not need to depend on the name of the tag. We don't have a timeline for this at the moment, but we will keep you updated here! Follow along for updates.