Yes. Same issue. If I set my custom field to WYSIWYG, go to create a post with the field, switch the WYSIWIG editor from Visual to text and paste my iframe code in, when I switch back to visual, I see the rendered iframe content. However when I go to the front end, the iframe content doesn’t display. OTHER text like <h3>A Related Product</h3> WILL display, but the iframe code is stripped out.
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