Magento 2.4.3 Page Builder Image Gallery Wrong Url

I’ve just updated to 2.4.3 (which now includes Page Builder).

When using Page Builder to add images from the Media Gallery, the selected image does not display properly because the image src is incorrect.

If I use the Upload Image option rather than Select From Gallery, there is no issue.

When using the Select From Gallery option, I find and select the image, then use Add Selected.
Instead of using the expected Media Url, the image uses the stores base_url followed by the image path.

The preview image displays normally inside of the media gallery masonry block, and when inspected inside the Media Gallery, the image src appears correctly. As soon as I Add Selected, I receive an error in my browser console GET https://example.com/path/to/image.jpg 404.

If I continue on and save the page, then view on the frontend, there is another console error Get https://media.mycdn.com/media/path/to/ 404

So the backend preview inside of the Media Gallery has an image src of https://media.mycdn.com/path/to/image.jpg, then the inserted image src is https://example.com/path/to/image.jpg (which is not the correct media url), and on the frontend, the image src is https://media.mycdn.com/media/path/to/ (which is the correct domain for media, but not the correct path).

Has anyone else encountered this issue?