I am using oembed plug in to be able to embed videos easier.
When it is initially embeded it is displayed and playable in the editor. However, when editing that post some time later all that shows is the ifram block placeholder.
How do I force the videos to load?

Seems to be an issue with
Seems to be an issue with Oembed, which is a third-party plugin. You should post your issue on the plugin's page.
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I don't think it is because
I don't think it is because when the problem occurs oembed is irrelevant.
I could simply copy/paste the youtube embed code and it will not display in the editor(it will with oembed). The issue is if a user wants to edit that post the iframe is displayed as an square with iframe in the middle.
I am just looking how to force ckeditor to display the contents of the iframe.