Hi. I just upgraded a test site to 1.11.0.
Nice features. Backdrop is looking better and better.
However, there are a couple of issues I am seeing.
The new color module in the theme settings is not showing the preview. The whole preview area is just blank white.
I think it's great that there is now a Rich Text Editor File Browser. I am getting the new library selection dialog when I click on the image icon in ckeditor, however when I click on an image it does not select it and when I click on the insert button, the dialog goes away and the image is not inserted.
I have tested with firefox 56.2.0 and chrome 59.0.3071.115 on FreeBSD.
Can you tell us what version of Safari you are using?
I've created an issue for the problem youve reported as well (https://github.com/backdrop/backdrop-issues/issues/3295) but the version information would really help us diagnose and resolve the issue.