Safari: script panel size doesn't fit the page

[bugy]

If you select a script in Safari, the panel on the right (with description, parameters, buttons, and a log panel), then it's not adjusted to the screen height.
If the content is small, then the panel height is too small also.
If the content is large, then the panel grows outside of the page (instead log panel should get a scroll)

[bugy]

The problem happens because of height:100%, display:flex and flex: 1 1 auto.
There was a bug in CSS flexbox spec: w3c/csswg-drafts#1679 and both Safari and Chrome implemented the spec with this bug.
The bug (short version, in my understanding) is that flex-basis: auto should always be indefinite, so height:100% shouldn't be resolvable.

Since then, the CSS spec updated and Chrome updated their implementation. However Safari still implements the old version of the spec, that's why flex-basis: auto and height: 100% don't work there