Cover Art not respecting limit

Running 5.2.1 Build 4428 on Win7 Pro x64. Behaviour is the same on Firefox and Chrome.
In Settings / Advanced I have entered 18 for the cover art limit. However, when I go into Random, Recently Added, or any category I have 40 images loading.
Any way to have the Cover Art Limit working?
In Settings / Advanced I have entered 18 for the cover art limit. However, when I go into Random, Recently Added, or any category I have 40 images loading.
Any way to have the Cover Art Limit working?