vimeo fullscreen button not appear

thanks for sharing! not sure i understood, which plugin setting? can u pls share screenshot?

Any security plugin or similar that can set permission policy on iframes

so u can turn off that policy regarding specific to vimeo?
or do u ment we should turn off the plugin at all?
thanks for sharing!!

turn off the settings or change the setting with less restriction

Seeing this challenge as well… coming at this from a vimeo url link added into an ACF oembed field… I mention that as the oembed function seems to be the part that is blocking this control, sometimes. Been discussed in ACF forums and kicked things back over here to WordPress.

Witnessed this in both Chrome and Safari May 2023 latest browsers of each running on a Mac for whatever the extra detail is worth.

Follow up, this might be a header permissions policy issue, thus it might feel like its showing up randomly depending on where you host your site(s) and/or depending on your apache or nginx server settings for this.

Decent description of the possible challenge here on stackoverflow with a response from Vimeo Support Center as well.

https://stackoverflow.com/questions/67720466/embedded-vimeo-iframe-fullscreen-not-working-in-chrome