Tab group selector's bottom is cut off unlike in Safari

Steps to reproduce:

1. Open tab group drawer

Expected behavior:
Non cut off bottom of tab group drawer

Orion, OS version; hardware type:
App version: 1.1.6 (8) (WebKit 8612.2.9.0.20)
System version: 15.1.0
Device type: iPhone 11
Native bounds: (828.0, 1792.0)
Scale: 2.0

Image/Video:

How it is in Safari:

How it is in Orion: