As discussed earlier this month at T116515: Enable embedding of media from Wikimedia Commons, videos from Commons no longer work when embedded here on Phabricator, see e.g. the example video in the announcement blog post - tested in Chromium ("Requests to the server have been blocked by an extension." - even when I have no browser extension enabled) and Firefox, which throws the following error message in the console:
Content Security Policy: The page’s settings blocked the loading of a resource at self (“script-src”). Source: (function (NAVIGATOR, OBJECT) {
OBJ.... new_feature_embed_videos_from_commons_into_phabricator_markup:1
Content Security Policy: The page’s settings blocked the loading of a resource at self (“script-src”). Source: (function (ERROR) {
const V8_STACK_.... new_feature_embed_videos_from_commons_into_phabricator_markup:1
Content Security Policy: The page’s settings blocked the loading of a resource at https://commons.wikimedia.org/wiki/File:Saving_and_sharing_search_queries_in_Phabricator.webm?embedplayer=yes (“frame-src”).