Bug: menu is truncated by small windows

[simonw]

Spotted this:

If an application window is too short, any menus opened will be truncated meaning you cannot see the options at the bottom of those menus.

[jelveh]

Thank you for reporting this issue. This is caused by the menu UI being rendered in the iframe that hosts the app, which makes for poor UI/UX issues similar to this. What I'm doing right now is building a mechanism through which the menu is rendered by the desktop rather than the app. It'll take some time, but it's coming 🚀

[KernelDeimos]

Also applies to the context menu when the app window has a small vertical size. Also, I wonder what we do if the viewports vertical size is small; just clip it or do a

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