Supports always extending to the bed
In the past I thought that I've been able to add supports from the model, now when I try to add a support whether it be using a support enforcer or painted on it always extends to the build plate, even if I add support blockers. I just want a simple support for a large overhang at the top of the model. Is there a setting that I'm missing? In the screenshot the blue box is an enforcer, the red it a blocker. 
Prusaslicer 2.4.1
Supports: For support enforcers only
Support on buildplate only: unchecked
RE: Supports always extending to the bed
Snug?
The Filament Whisperer
RE: Supports always extending to the bed
As Swiss_cheese said. Plus, that's not how support blockers work. They prevent creation of supports, but once supports get created -- as in your case with the support enforcer -- you can't use blockers to "erase" portions of those supports.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...