## BUG/PROBLEM REPORT (OR OTHER COMMON ISSUE)  This is a default Plone Site, no addons or configuration changes. Migrated from 5.2.10 to 6.0.6. I do not have any issues with a site that is created in this environment in 6, it's only ones migrated from 5. As far as I can tell, the resource registry and theme css are exactly the same. ### What I did: Create a Plone Site in 5, make no changes. Copy the DB to a Plone 6 environment. The 5 environment was built with buildout and the 6 is built with just venv/pip. ### What I expect to happen: appropriate svg images for Selected and Rearrange buttons ### What actually happened: No svg images included so it uses the fallback Plone icon. This also increases the size of the button. ### What version of Plone/ Addons I am using: Migrated 5.2.10 to 6.0.6, no addons