Vimeo Embeds Blocked [Likely third-party issue]

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Description of the Problem

Vimeo embeds mostly are broken, using the embed iframe causes a white square in the video frame. Sometimes it is possible that the embed loads anyway, but this is explained in the reproduction below.

After checking using developer tools, the iframe returns a 403 error. Digging deeper into it, the blocked request is a result of a referrer link to cytube. When the iframe does successfully load, the request no longer has a cytube referrer link in it.

Request that fails: https://player.vimeo.com/video/770989825/config?autopause=0&background=0&badge=0&byline=0&bypass_privacy=1&collections=0&color=ff9900&context=embed_playlist.1973832&controls=1&default_to_hd=0&external_embed=1&force_embed=1&fullscreen=1&h=013a9c41ac&like=0&logo=0&loop=0&outro_new=0&playbar=1&portrait=0&referrer=https://cytu.be/&share=0&title=1&transparent=0&volume=1&watch_later=0&s=398edae27b780f912bc728f99f38cb5d4c38b5f8_1670070206

Request that succeeds: https://player.vimeo.com/video/770989825/config?autopause=0&background=0&badge=0&byline=0&bypass_privacy=1&collections=0&color=ff9900&context=embed_playlist.1973832&controls=1&default_to_hd=0&external_embed=1&force_embed=1&fullscreen=1&h=013a9c41ac&like=0&logo=0&loop=0&outro_new=0&playbar=1&portrait=0&share=0&title=1&transparent=0&volume=1&watch_later=0&s=398edae27b780f912bc728f99f38cb5d4c38b5f8_1670070206

embed code used:

System Information

Windows 10
Vivaldi
403 embed error

calzoneman / sync