I could not replicate this in LTR wikis (en.wiki or MediaWiki.org) but I suspect this is not so much ltr/rtl but floating behavior of the templates and images.
The top two images are regular images (not templates) - they are perfectly editable if you remove the template at the top. They got their shielded status after I inserted that template.
Steps to reproduce:
- Edit a page
- Insert some image (or more) to top
- Save page
- Edit again, insert template "{{עליות}}" just above the images.
- Save.
- Edit again. Observe: The images jumped to the left (wrong float side) and are now uneditable.
- Interesting fact: Remove the template and save, then go back into the editor and the images are still uneditable.
Version: unspecified
Severity: normal