Frequency=Annual is displayed in the used filters even if NOT_DISPLAYED is used
When FREQ=A is a single-fixed value and NOT_DISPLAYED FREQ=A is used to hide it from the table, it disappears from the table subheader and time period filter, but it is still visible in the Used filters section.
In comparison, an example from the same DF is MEASURE=RV used in NOT_DISPLAYED and that isn't displayed anywhere in the visualisation.
Edited by jean-baptiste nonin