It was introduced by r351582 (47.0.2524.0) in attempt to fix  issue 458655 . I've commented on that issue, but no develeoper responded there.

* if the second click is ~500ms after the first one, the popup will be re-opened. I can reproduce it easily.

* if the second click is a doubleclick (less than ~500ms after the first one), the popup won't be shown at all. Some/many people (non-geeks) always doubleclick things.

Unable to reproduce this issue on Ubuntu 14.04 using chrome latest stable M55-55.0.2883.87 by following steps mentioned in the original comment. 

Teo@ - Could you please confirm that is this issue is consistently reproducible for the all the extensions or specific to any particular one? If yes, could you please name them.

Thanks!

I have the same version of chrome 55.0.2883.87 on Ubuntu 16.04
Yes it happens with all extensions.

Have you tried varying the "length" of your clicks, i.e. the time span between pressing and releasing the button? For me, the issue systematically happens if the click is longer (the popup is closed on press and reopened on release), while the behavior is almost as expected (closed on press and not reopened; should actually be closed on release) if the click is super-fast, the threshold being much lower than a reasonable one for a click (regardless of the fact there's no reason why there should be any threshold whatsoever).

Note that comment 1 does not describe the issue accurately: it has nothing to do with the time since the previous click, it only has to do with the time between the press and the release.

I don't know why you close the popup on press rather than on release (especially given you do open it on release). I do understand the reasoning about treating a double-click as a single click ("non-geeks tend to double-click on everything") but I can't see (A) that being a reason for hiding the popup on press rather than on release nor (B) how in any way that leads to this issue. If anything, I'd expect that avoiding a double click to be treated as two separate clicks would have the side effect of missing a too-quick second click, but the issue here is completely different.

Thank you for providing more feedback. Adding requester "brajkumar@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Cleaning up "Needs-Review" label as we are not using this label for triage. Ref  bug 684919 

As per comment #1 looping @rdevlin.cronin for more updates on this issue. 

> As per comment #1 

Note my comment 3. Comment 1 talks about double clicks. This isse has nothing to do with double clicks.

I can reproduce this bug in GTK+ based desktops, but not in QT based:

1. Click the upper right side of Chromium, click on an extension icon.
2. Click on it again for hiding it.

Result: the extension menu hides for a while, but after a fraction of a second it's shown again. Like if there was an additional click.

Issue has not been modified or commented on in the last 365 days, please re-open or file a new bug if this is still an issue.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Fixed for me.

It's not fixed, I'm still observing it.

Please reopen.