Device name: E6553

From "Settings > About Chrome"
Application version: 51.0.2704.81
OS: Android 5.0.2

URLs (if applicable):

Behavior in Android Browser (if applicable):



Steps to reproduce:
(1) Tap the three dots icon on top right of the screen.
(2) 'Merged tabs' is not available anymore.
(3)

Expected result:
Being able to merge tabs and apps.

Actual result:
No option available.