"Remove all" greyed out in column selector

Recently updated to v0.49.7.

With questions presented as a table, in Visualization Options -> Settings -> Add/remove columns, the "Remove all" and/or "Add all" option is greyed out and unusable.

Has this recently been tied to a permission setting? Or possibly broken?

It looks like this is a known bug: Remove all doesn't work when adding/removing columns · Issue #39912 · metabase/metabase · GitHub