Version: 51.0.2679.0/8074.0.0 (Official Build) dev-channel peppy,quawks,gnawty,daisy
OS: Chrome os

What steps will reproduce the problem?
(1) Sign in to user >> Right click on "My Drive" folder from left Navigation and observe for context menu  
(2) Now create a folder in "My Drive"[Say New folder] >> Right click on New folder >> Select Rename 
(3) Now without closing edit field tap on "My Drive" folder from left navigation and observe

Expected: No context menu should be seen even while renaming any file/folder
Actual: Instead context menu with options create shortcut,copy,cut options are seen while renaming and taping on My Drive/Shared with me folders

NOTE: If it is an intended issue unwanted 2 lines are seen in bottom of context menu. [Please refer screenshot]

This is a regression issue as no context menu is seen in 46.0.2463.3/7305.0.0 dev channel quawks

Issue is also seen in 49.0.2623.95/7834.60.0 beta channel daisy.

@fukino: Please confirm whether it is an intended behavior or an issue.