Why do I have 2 scroll bars?

I have 2 scroll bars on the messaging page of my app. The inside one is attached to the repeating group and always scrolls the very minimum amount. The outer one is the one I prefer to keep, and scrolls the correct amount. Having 2 scroll bars creates confusion on mobile when the app doesn’t know which one to scroll. Any help is greatly appreciated! Thanks!

It is a repeating group. The repeating group has fit height to content checked. Shouldn’t that make it so it doesn’t need a scrollbar?

For sure! Here it is