Thanks for the fix 
I am not sure why is not expected to work nicely on desktop (mobile-view) and mobile (desktop-view). This is a little bit edge case I know, but on desktop (mobile-view) would be nice if for no other reason, but at least for dev purpose. If we switch to mobile view then we should see almost the same like on a mobile device without simulate it on virtual device.
On the mobile (desktop-view) now overflows the modal content. This is also an edge case but sometimes Discourse detects wrongly the mobile devices browser so it drop them to desktop-view.
Desktop (mobile-view)
Mobile (desktop-view)
