App Version:  67.0.3369.0 Canary
iOS Version: 10.3.3,11.2.6
Device : iPad

Pre-Condition :
1. Enable #slim-navigation-manager from chrome://flags.

Steps to reproduce : 
1. Launch chrome. 
2. Tap on Menu > New tab

Observed results:
about://blank text is displayed for a second on New Tab title.

Expected results:
about://blank text should not be displayed.

Number of times you were able to reproduce: 5/5
Bug reproducible after clean install: Yes
Bug reproducible after clearing cache and cookies: Yes
Bug reproducible on Chrome Mobile on Android: NA
Bug reproducible on Dolphin/Safari/Firefox: Safari : NA
Bug reproducible on current stable build (App Version, iOS Version)NA,New UI in M67
Bug reproducible on the current beta channel build (App Version, iOS Version): NA,New UI in M67

Link to Video :
https://drive.google.com/file/d/1N3korY8WLZs9yyQuRBSYX1nhXUAK9HP9/view?usp=sharing