The email editor inside of workflows is super buggy. If you don't highlight the text you want to link perfectly, the highlight will disappear and you've unknowingly selected the entire email (at least that seems to be the case cause if you take an action like try to delete what you thought you highlighted, it deletes the entire email). But then, if you look at the code viewer it's still there. So you have to close the email editor and reopen it to see your email again.

Adding links to existing images deletes the image. You have to add the link at the time of adding the image.

When you try to update linked text, if it's not all selected it will re-add the text that was selected into the existing text.

The ability to add a width to the email without having to wrap my email in html would be nice as well.