Just as you can directly “insert image” or “insert link” into a signature or an email message, it would be more user-friendly if you can simplify the process to “insert a clickable image”, instead of having to use the “insert html” and then having to actually use an online image file.
Just a thought.
this function is not planned but there is simple workaround:
insert image by right click - insert - image.
after image has been inserted right click on image - insert - link.
but we have now found a bug there so all links must be with http:// or it will make wrong link, but it has been noted and will be repaired soon.