Chrome Version:71.0.3544.0/11064.0.0 dev channel Falco,Blaze,Swanky
OS:Chrome OS

What steps will reproduce the problem?
(1)Open 'Browse as Guest' user
(2)Launch Chrome  >> Open App launcher and observe the recent items

Actual: Black shadow is seen on the recent items like Chrome,Get Help, Files,Settings ...in App launcher
Expected: Unnecessary black shadow should not be seen for the recent items of App launcher

This is Regression Issue as same is working fine in 70.0.3511.0/10952.0.0 dev-channel Reks
 
Note:Issue is also seen for recent items in App Launcher of Signed in user 

Attached the screencast for reference..

 

Deleted: Actual_Guest browser.jpg 2.4 MB

	Actual_Guest browser.jpg 2.4 MB View Download

Deleted: Actual_Signedin_user.jpg 3.2 MB

	Actual_Signedin_user.jpg 3.2 MB View Download

Deleted: Expected.jpg 2.3 MB

	Expected.jpg 2.3 MB View Download