Since updating to 3.7.1, the Search Text and Result Text font seem to be much lighter. After going into the Appearance Editor, I noticed the Search Text font was indeed set to System Light, so I changed it to just System and now it is back to normal.
The Result Text font however, is already set to System... The thickness of the font as it appears in the editor is also much thicker than it actually appears in Alfred's search box. I can set Result Text to System Light, and the actual search box font isÂ evenlighter than it was before!
My theory is 3.7.1 introduced lighter