Hi Rob, Vimeo links should always open with fade effect. And looking at your site, it does open with fade but then there is indeed that weird bounce. I’m not sure why this is happening on your site.
It might have something to do with the “border-box” sizing that is being used by the theme for all elements. Or it could be another script that is interfering…
In any case, I did notice two (un-/related?) errors that should be resolved. One coming from the Typekit script https://use.typekit.net/ynw5acs.js (is the theme using Typekit or another plugin?) :
Failed to load resource: the server responded with a status of 403 (Forbidden) https://use.typekit.net/c/0c8754/proxima-nova:n1:n3:n4:n6:n7:n8:n9.b5r:N:2,b5t:N:2,b5w:N:2,b5y:N:2,bBh:N:2,b62:N:2,b64:N:2/d?3bb2a6e53c9684ffdc9a9afe195b2a6290e57de54ffd90397ef00da346ed1b950711aaa14fc614d66c46a330311a1f0b54594891ae095fe5de8f0ac69397ba52c5236564486d8f3ef3199f8a76dbeeba880aec
And one coming from another plugin:
Failed to load resource: the server responded with a status of 404 (Not Found) https://nocturnallands.com/wp-content/plugins/hover_effects_pack/head.min.js.map
But I cannot say if resolving these issues would solve the bouncing effect.