Full emoji picker has positioning and scrolling issues

Environment

Discourse Version: 4580595bd8c349162e4254296ce70e3caa597e4f

Plugin Commit: 27076275a28411b59fe9af2d55f17516aa9ae96c

Other Plugins
none

Steps to Reproduce

  1. Ensure full emoji set is enabled for retort
  2. Click the retort post action button
  3. Page scrolls slightly (issue)
  4. Enter text in input - page scrolls more (issue)

Example

https://try.thepavilion.io/t/heres-something-to-react-to/571

Logs

This has been addressed here