Filters seem to work fine until I add new objects or lines. For example, I set up a new workset filter because I wanted surrounding context to be in half-tone. I applied it to a view and it worked really well until I added new model lines or other modeled objects to the workset.

Restarting Revit or reopening the project doesn't seem to help. I haven't tried yet, but maybe deleting the filter and re-making the filter will fix the glitch. However, if there is a better fix, I'd love to know.