I'm developing a site using a subtheme of bootstrap_sass, and I noticed that certain nodes were not staying within their content regions. Specifically, I was using "sidebar left" for menus etc., and the remaining width was for the "content" region. Most nodes on the site would work correctly - at the top of the page you'd see the menu in the sidebar and the node content taking up 3/4 of the screen to the right of the sidebar. But some nodes would have the node content appear entirely below the last of the sidebar's content.
I tried to debug by working out what custom CSS I needed to add to fix the layout, and realised there was more than one cause.
So I've set out to try and reproduce this on a minimal installation
Even without changing the input format of the "new comment" form, the page doesn't format correctly.
Clearly, oversized images need handling somehow. But however they are handled, they shouldn't break the region formatting of the theme.
Active
5.5
Code
@jamesoakley
The issue is not generating for me.
Attaching screenshots.
@ravi - you missed
4.
Go to Text Formats and Editors. Edit "Full HTML". Add lots of other buttons to the CKEditor toolbar, so there is more than will fit on the width of the page.