To see the problem it's easy go to this URL:
https://www.kijiji.ca/b-chambres-a-louer-colocataire/ville-de-montreal/c36l1700281
Problem: You don't see any listing even if it has over 4000 listing
Disable the only cosmetic filter and everything is fine
Filters that block something:
https://i.imgur.com/kUBiksZ.png
Page with cosmetic problem enabled:
https://i.imgur.com/o4PfiPv.png
Page with cosmetic problem disabled:
https://i.imgur.com/Gf226Sy.png
If you need more information just leave me a reply