Update: created a support case: Esri Case #03803038
Hi,
I am wondering if others also encounter this issue. I encounter this issue in a client enterprise environment (10.7) as well in our company enterprise (11.1).
Created this ExB for this issue in our Enterprise.

Defined actions on map widget
Record selection changes Action 1: filter Boslaag to list Boslaag

Record selection changes Action 2: filter Lintbegroeiing to list Lintbegroeiing

Record selection changes Action 3: filter parcel <-- wrong action needs to be deleted.

Extent changes Action 4: spatial selection parcel based on map extend, filter to list Kadastraal perceel

Deleting action 3 on map widget
After deleting ‘Record selection changes Action 3’, two actions in Record selection changes remains.

But the ‘Record selection changes Action 1: filter Boslaag to list Boslaag’ has been deleted.
Action 1: filter lintbegroeiing to list Lintbegroeiing

Action 2: filter parcel (which should have been deleted)

When deleting now action 2, actual action 1 is being deleted.

It seems that the action first in the list is deleted instead of the selected action