New UI is cool but its hard to understand what the current page is in the list of tab on the right side of the screen. Please add a bit more contrast to the background color of the menus.
As an additional information, if you open many tabs and then switch to another app for a while, when you come back to Dolphin, all the pages previously opened are lost! This happens very often.
Here are my conf details:
App version: Dolphin 10.0.0
OS Name: iOS
OS Version: 10.2.1
Device Model: iPhone9,3
iappz about Dolphin Web Browser, v10.0.0