Steps to reproduce:
Open several tabs, so that they don't fit your browser window any more (like 22 or something). Try to scroll to the last tab. No scrolling is happening. Before the latest update I was able to scroll through the opened tabs with my mouse (Apple Mighty Mouse if that's important) just like in Safari.
Did you try using Compatibility mode?
I don't know what this is.
If applicable, does Safari behave in the same way?
Safari still offers the possibility to scroll through open tabs.
Before the update I could scroll horizontally through the open tabs and I would like to be able to do that again.
Orion, OS version; hardware type:
Orion version 0.99.121.1-beta (WebKit 614.1.20)
MacBook Pro (macOS Monterey 12.6.1)