Firefox and floated images and dragging in content or replacing via toolbar button

[indigoxela]

There are some annoying bugs with images - only with Firefox.

Here for reference an upstream issue: tinymce/tinymce#9129

Problem 1

When images are displayed as block element, either by "display" directly, or implicit by float, the images aren't draggable inside the editor content.

Problem 2

When trying to replace an image, and that image is floated or display-block, the new image gets added instead that it replaces the existing one.

Currently to me these two problems seem related somehow.

The weird part: it only occurs, if using the toolbar buttons (both, backdropimage or tinymce_imce plugin are affected).
It I use the doubleclick, which the backdropimage plugin provides, no duplication happens.

Tried to find something related in the Mozilla issue queue, but didn't find anything obvious.
Tried Tiny v 5 in above upstream issue demo - that didn't show that bug.

[indigoxela]

Another related upstream issue: tinymce/tinymce#8522

I can confirm that it has something to do with selection. So editor.selection.select(node) seems a valid workaround for duplicated images on insert (from image browser).

And the dragging problem also has to do with selection, it seems.

Another problem caused by the same glitch - removing selected images via key does not work, when image is floated.
And also cut/paste inside the editor.