GrapeJS editor does not use correct image sizes

I’m using latest Mautic (4.2.2) and recently switched to GrapeJS email-editor and found some bugs. One of it is that when i place an image and set it to a specific size (e.g. 360px width), the MJML code reflects this like expected (left side) but the ersulting HTML code result in a very small image because of the surrounding table which limits the size to 50px (right side)

In the preview inside Mautic, the image looks ok, but in the Email it is 50px in width.
Very strange behaviour