I don't think so, I just tested and as usual the Post and Page editor does the same.Here is the video: https://www.screencast.com/t/0MC8G8Upp5fE

I hope you've watched my video.

Please don't paste code or copied links. Make sure you only paste URL and make sure you use rich editor (view mode), not the text mode. I'm sorry but I have nothing to add here, unless you leave some video and I see what are you doing.

Thanks Robert. I will look into this a bit more.

Do you know ANY lightbox that works with your forum ? I mean without the user have to press CRTL+Z.

I'm sorry but I don't know such plugin. I asked our team to a new core function to replace simple images to link images in order to make them available for lightbox  solutions. We'll add it in future releases.