Custom Viewport might be broken

[ignaciojimenezr]

Issue

I believe you guys are 100px short on actual size for app builder, at least on width.

How to reproduce

I created a min width function that changes the view if width is 800 or below. When testing, I found out that my function wasn't running on 800 or below, it was on 900 or below.

Screenshots

Observe width for these:

Platform

• npx

Additional Context

Add any other context about the problem here.

[dosubot]

There isn't a 900px minimum width defined in the codebase—the only explicit minimum width is set to 800px in the Electron main process for the main window, and there are no other hard breakpoints or constants enforcing a 900px cutoff in the renderer code. The 100px discrepancy you're seeing is likely due to layout constraints like container padding, margins, borders, or the window chrome/insets, rather than an extra min-width clamp in the app builder logic itself. In fullscreen, the app builder container should take the full viewport width, but in other modes (like PiP), the container is limited by classes such as max-w-4xl, which could reduce the effective width available for your app UI (source, source).

If you want to pinpoint the exact cause, try inspecting the computed width of the app builder container and its parents in your browser dev tools to see where the extra 100px is being lost.

To reply, just mention @dosu.

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