Hello. Thank you for contacting the Toolset support.
Toolset offers the limited integration with the Beaver Builder and not Beaver Themer.
Another thing is that - I see you have installed and activated Toolset Layouts plugin. You should not use the Toolset Layouts plugin and the Beaver Builder plugin on the same site as it may cause the issue.
However - assigned the default layout to page like "Full width -no sidebar" should be controlled by your theme. You can cross check it by deactivating Toolset plugins - do you see sidebar or not with the following test page:
- hidden link
I see the sidebar is global on widgets page:
- hidden link