Pane's height exceed 100%

[danielpaz6]

Describe the bug

I made a simple horizontal divider, but the bottom's part keeps exceed the 100% height.

To Reproduce

Made an example: https://codesandbox.io/s/compassionate-bartik-z9lev?file=/src/App.js:136-285

Expected behavior

The bottom's part should keep 100% height, and if the content inside overflows, it should make the scroll active.

A screenshot that demonstrates the "fake" scroll-bar: https://i.imgur.com/kZEmpt2.png ( the bottom part's height exceeds my screen, so the scroll-bar not really being activated but instead the height is very high.

[louis-vinchon]

@danielpaz6 or everyone else that is having issues with sizing splitpane:

I had a very similar issues:

• Splitpane was not respecting overflow properties on parents.
• It had a default height of 100% that ended up being greater than its parent container's height.

I managed to "fix" it by applying position: relative !important to the element without any noticeable drawbacks.