Chrome Version: 73.0.3645.0 (Official Build) b2e486f0d5a83d34bd6bdd72ebbe2005063a8133-refs/branch-heads/3645@{#1}(32/64 Bit).
OS : Mac(10.13.6, 10.13.1, 10.14.2)

Pre-condition:
Enable 'Force UI direction' flags under chrome://flags

Steps to reproduce:
1. Launch chrome and Navigate to youtube.com.
2. Open wrench menu and under 'More Tools' ,click on 'Create Shortcut'.
3.'Create Shortcut' Dialogue will open ,check the 'Open as window' option.
4. Navigate to chrome://apps and click on Youtube shortcut.
5. Observe

Actual Result   : Shortcut window name overlaps with traffic signal buttons in RTL.
Expected Result : Shortcut window name should not overlap with traffic signal buttons in RTL.

This is a Non-regression issue broken from  M-73.

Note :
1.Issue not seen on Windows(7,8,10) and Linux(14.04 LTS) .
2.'Create Shortcut' is seen from  Canary Build #73.0.3641.0 

Kindly refer the attached screen-cast.
https://drive.google.com/open?id=1IVFdoduO6rh8fnUswXGHQC6mpalc2Ygg
Thank You..