Astro-keystatic editor not responsive, viewport missing from head.

The content pages editor is not responsive, this is because there is no meta data for viewport in the head. As far as I can see, there are only styles in the head. I can manually add a viewport, title and favicon via chrome developer tools.

I really really tried to track this down, but as I say I don't know enough. I hate to file a bug report without having at least some idea of a possible solution. The bug does not appear in the next JS version, which is fully responsive; it only seems to appear in the Astro version. I've tried assembling from source code in case it was a dependency problem and I've added Keystatic to an existing Astro project, with the same bug.

Reproduce the missing viewport metadata in the Astro version of the content pages editor and inspect how its document head is assembled; the issue reports that the head currently contains only styles. Compare the Astro behavior with the responsive Next.js version, and consider the issue complete when the Astro editor includes the needed viewport metadata and is responsive without manual browser edits.