🐛 Fixed blank branding preview on split front-end/admin domain setups
🐛 Fixed blank branding preview on split front-end/admin domain setups

no issue

- the POST request made to fetch the preview was going to the non-trailing-slash version of the site URL which was resulting in a redirect to the trailing-slash version which then failed due to CORS

TryGhost/Ghost-Admin,TryGhost/Ghost-Admin