Per triage: I can't seem to repro this with: 

Version 56.0.2924.79 beta (64-bit)
Platform 9000.76.0 (Official Build) beta-channel samus
ARC Version 3674649
Firmware Google_Samus.6300.174.0

Can you please test again with 56 when you get a chance? Thanks!

Stays the same on v56 on the HP Chromebox (zako)


Also reproducible on my 

9202.7.0 (Official Build) dev-channel samus
Version 57.0.2987.11 (Official Build) dev (64-bit)

I right click Chrome icon, right click a black empty area, and right click Chrome icon again with no clicks in between.

I can also reproduce by right clicking on an empty area 5 times and then right clicking the Chrome icon. No "New Window" options appear.

I could repro it on multiple devices. 

<triage>zork@ could you have a look into this</triage>

Reproducing steps in a video 

Deleted: test (6).webm 2.2 MB

	test (6).webm 2.2 MB View Download

Thanks, Omri.  For clarification, then, "Chrome Tab" in the original description doesn't refer to a tab in the Chrome browser, but rather to the Chrome (or any other) app icon on the shelf.

I'm still trying to hunt down the exact cause, but it seems to be somewhere in the widget/view mouse event handlers.  One clue I've found: the problem got worse after this CL: https://codereview.chromium.org/1953753002.  The basic bug is that a right-click on the empty shelf area will make a subsequent rclick on an app icon show the basic (non-app) context menu.

Before CL: A rclick on an app icon would only show the basic (wrong) menu when a correct app rclick was followed by a single empty shelf rclick.  Any other combination of rclicks would produce the full (correct) app menu.  See shelf_rclick_old.webm.

After CL: After an empty shelf rclick, all subsequent rclicks (on app or empty shelf) show only the basic shelf menu.  See shelf_rclick_new.webm.  A left-click on the shelf will reset this (note that in both videos, I'm only right-clicking on the shelf).

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	shelf_rclick_old.webm 5.8 MB View Download

Deleted: shelf_rclick_new.webm 1.7 MB

	shelf_rclick_new.webm 1.7 MB View Download

When an open menu is canceled by a click outside of its region. 

This is done via RepostEventImpl: https://cs.chromium.org/chromium/src/ui/views/controls/menu/menu_controller.cc?rcl=f7a8e76c2a53d147b214c67167661e7760d9d5f3&l=164

Event propagation should send this to the shelf. I would suspect that the incorrect view within the shelf is receiving the right-click, and that is triggering the basic menu.

I would recommend taking a look at how the shelf generates its MenuModel. I can't recall if it is done in one central location, or if each icon view also generates one.

The reposted event also has the coordinates of the click, so it should be possible to traces back from the menu model creation to figure out why that view was targeted.

Does not repro on M71