Google sites embed breaks w/3rd party cookie blocking

This also happened on Mac OS Brave Nightly . When I go to a google sites, any custom embed shows the loading circle forever unless I disable 3rd party cookie blocking. Google sites custom embeds are contained in 3 iframes(an “outer”, “inner”, & “user” iframe, which is rediculous in my opinion). I remember that it worked after re-enabling 3rd party cookie blocking on the mac(it only required disabling 3rd party cookie blocking the 1st time it loaded), but on Android beta, it only works with 3rd party cookie blocking disabled.