Update: This issue seems to be due to Cloudflare minification (html, css, js), disabling that and clearing the cache fixed these issues.
// Original post:
Hi @david @Discourse
Just a heads up, default thumbnail mode appears to not work anymore with Discourse Stable 3.3.0.
List view will show for all cases regardless of what has been set, unless you use an override setting - but that only will apply for specific categories, making it impossible to use e.g. masonry or grid on the home page.
It was working as expected prior to upgrading from 3.2.x to 3.3.0 and has been observed on multiple instances.