The 'Manage columns' feature on the All Hosts page functions by saving "user table preferences" which store which columns the user prefers to have in the table.

If a user has not customized any columns, a set of default columns is displayed.

The first time a user uses 'Manage columns,' a modal appears with checkboxes so the user can pick what columns to display.

Expected: The columns currently displayed in the table should be pre-selected, even for users that have no existing user table preference.
Actual: No checkboxes are pre-selected.

The impact of this is that the following is common:

1. 5 default columns are displayed on the table
2. User wants to add one column. Clicks 'Manage columns,' and checks the box for the 1 column
3. Only 1 column is displayed on the table. The 1 column has replaced the 5 default columns.