Summary
On Retool Cloud with the new app builder, opening a published app via a custom domain (e.g. Checking your browser...) and clicking the in-app "Edit app" button loads the editor on the org's retool.com subdomain instead of the custom domain, which often forces a re-login — even though the editor works identically under the custom domain and the Edit buttons on the home/apps list page are already custom-domain-aware.
AI Response
This behavior reflects a current inconsistency in how the new app builder generates the in-app "Edit app" link versus the home page Edit buttons, rather than a technical limitation, since the editor loads correctly when the subdomain is manually swapped for the custom domain. A reliable interim workaround is to edit the URL directly — replace oursubdomain.retool.com with customdomain.com in the /rr/edit/... path to stay on the custom domain and avoid the re-login. There is no published documentation or existing forum report that specifically covers the in-app Edit app button not being custom-domain-aware, so no directly relevant solution or corroborating report was found. The most closely related public materials confirm that new-builder apps on custom domains are supported and that domain redirection preferences have been a recurring request.
Sources
Publishing apps on custom domains
Official product update confirming new app builder apps can be published on custom domains, establishing the expected custom-domain behavior for these apps.
A related standing request to have Retool consistently route/redirect from the org.retool.com subdomain to the custom domain, which parallels the desired custom-domain-aware Edit app behavior.
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