Since June 28th, the build settings now display a warning when a build command / publish directory / base directory is specified that differs from the one specified in
Personally, I’ve been bitten by this multiple times, where I tried changing the build command in the UI, only to realise 20mins later that the
netlify.toml was overriding it all the time, and my changes were ignored.
The new warning is based on the
netlify.toml of the currently published deploy.