Render Filters that are disabled in an InteractiveRenderFilters stack still show up in the list of "Available Filters" in the "Interactive Render Filters" list.
They can also be activated and the UI will show an active render filter, but the filter won’t be applied to the render, which can be misleading for the user.
Steps to reproduce
Create an InteractiveRenderFilters node.
In the Parameters tab add an interactive render node.
Press 'd' to disable the node or right-click and choose "Disable"
View the IRF popup in the main menu bar and see that the RenderFilter is still there and can be activated.