As a datapoint, this embed with a filter works fine for me as an embed:
<iframe class="airtable-embed" src="https://airtable.com/embed/appKXtKYYuFC23NRc/shrwCCKFngdvAeJ2d/tblVPK8ZJkjvaJtVn?backgroundColor=cyan&viewControls=on&filterContains_Notes=Test" frameborder="0" onmousewheel="" width="100%" height="533" style="background: transparent; border: 1px solid #ccc;"></iframe>
Wish I could help more, sorry!