I used the WYSIWYG editor to add a link, then used the "globe" icon to show the raw link (instead of the auto-suggested title of the linked page). I also added an image. I was then unable to pub...
I've run into similar issues with the system adding weird HTML code that prevents folks from posting when using options in the toolbar. I spent a lot of time with support going around in circles, and the issue still hasn't been resolved. Hopefully, they figure it out!