Media library replace image popup not displaying completely below 641px width

[subrataemfluence]

When trying to Replace Media with screen width below 641px the right panel of the popup gets hidden and there is no way to update image information like description and title.

Tested in Chrome (Version 58.0.3029.81 64-bit) and Firefox (53.0 - 64 bit).

Screenshots attached.

[subrataemfluence]

Screen width 640px. Library taking up the whole window making information panel invisible

[subrataemfluence]

Screen width 641px. Information panel is visible.

[ramonopoly]

From what I can tell, it's because the bottom value is set to 120%:

https://core.trac.wordpress.org/browser/trunk/src/wp-includes/css/media-views.css#L2466

I don't know if this is intentional given the paucity of screen real estate on smaller viewports. The user does can return to the edit screen to update the image's details.

What would be an alternative here? I can think of a slide out menu if folks agree that it would be beneficial.