Selection filter cannot be removed if the value is not shown

[AronVanAmmers]

Selection filters can be added by clicking bars in the chart. For example, if the category chart shows categories A, B and C, we can click on category B. The selection filter "category B" is then applied to the other charts. To remove this filter, we click the bar again.

By applying and removing multiple selection filters in sequence, it is however possible to end up in a situation where the selection filter is not shown in the chart anymore, and the user is hence unable to click it. The selection filter can then not be removed. Only by applying the same set of filters again, can the filter be removed.

Example. Here the selection filter Service: CHILDRENS AND EDUCATION SERVICES is applied. We click the bar in Supplier for St Helens Council - EUROPEAN CARE & LIFESTYLES (UK) LTD.

This selection filter for Supplier has now been applied. Now we click the bar in Service for CHILDRENS AND EDUCATION SERVICES to remove that selection filter:

Now there's still a selection filter for Supplier: EUROPEAN CARE & LIFESTYLES (UK) LTD active. But this supplier is not visible in the chart anymore. We can't remove it (without reapplying another filter to make the bar visible again):

Suggested approach: add an explicit removal button for selection filters in the applicable chart. So in the example case in the Supplier chart.