Bug: virtualisation breaks UI in 5.1.0

[cakeinpanic]

Hi!
After update on 5.1.0 and turning on virtualization by adding [virtualize]="true"

Actual behaviour
https://user-images.githubusercontent.com/588916/130426304-7cb578e4-e026-477a-ac8c-b5d878cd6361.mov

Expected behaviour
https://user-images.githubusercontent.com/588916/130426357-69c1931c-8668-42ed-afd6-4324bf3e1352.mov

<emoji-mart
  set="apple"
  [autoFocus]="true"
  [showPreview]="true"
  [virtualize]="true"
  [virtualizeOffset]="500"
  [darkMode]="false"
></emoji-mart>`

Chrome Version 89.0.4389.128 (Official Build) (x86_64)
Macos: Catalina 10.15.7

 "@ctrl/ngx-emoji-mart": "^5.1.0",
 "@angular/common": "~11.1.0",
 "@angular/compiler": "~11.1.0",
 "@angular/core": "~11.1.0",
 "@angular/platform-browser": "~11.1.0",
 "@angular/platform-browser-dynamic": "~11.1.0",

[scttcper]

🎉 This issue has been resolved in version 6.0.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀