Same here, it happens randomly even on the same page where it previously was working and vice versa. 

Unable to reproduce this issue on Windows-10 using chrome latest stable M57-57.0.2987.98, Tried multiple times by navigating to different webpages, observed the event listeners list the items as expected.

Since there is no consistent repro available for this issue requesting some one from dev team to look in to it.

Thanks!

Can you include a link to page where you can repro this issue (even if it's inconsistent)? Thanks.

edhzsz@ Could you please respond for the comment #4?

I have the same problem. It was working like ~2 days before, I think chrome got updated.
OS: Windows 10
Chrome: Version 57.0.2987.133

You can try facebook or anyother site, it doesn't matter. The event listeners tab is empty. 

I am going to guess it's a thrown exception in javascript causing this. Can you please provide us with a stack trace within devtools if this is the case.

Next time this occurs can you please do the following steps:
1) close other open tabs
2) open new tab to "chrome://inspect"
3) click "Other" (on the left)
4) click "inspect" on the one listed (there should only be 1 if no other devtools are open)
5) (in the newly opened devtools) open console and see if there are any stack traces. If there are, please post the details of what they are here.
6) (If possible) try and get it to throw a new exception while this new window is opened. Try clicking different elements, open other panels, exc... And hopefully it'll throw again and give a full stacktrace to post here.

However, keep in mind this may not be what's happening so there may be no stacktraces making the previous steps useless.

Thanks.

I can't repro it on M57, we need your help in narrowing it down. Could you confirm that facebook.com, body tag selected, 'ancestors' bit checked is empty? What about the html node itself?

Hmm... it seems that the issue appears random. Sometime the event listener tab is ok, sometimes the tab is empty. And it doesn't matter what web page is.
Yes, the 'ancestors' bit is checked. It doesn't matter if the body tag or html tag is selected, the listeners tab is empty sometimes.

@allada
I made the steps, there is more than 1 devtool for me (all of them are something like "devtools-frontend.appspo…", the whole name is not shown). Some of them are trowing errors (just by opening them, I didn't need to click somewhere else):


Main._createAppUI: 43.8ms
inspector.js:8510 Main._showAppUI: 38.4ms
inspector.js:8511 Main._initializeTarget: 20.0ms
3inspector.js:919 TypeError: Cannot read property 'script' of null TypeError: Cannot read property 'script' of null
    at new SDK.EventListener (chrome-devtools://devtools/bundled/inspector.js:4783:541)
    at SDK.RemoteObjectImpl.createEventListener (chrome-devtools://devtools/bundled/inspector.js:4948:46)
    at Array.map (native)
    at SDK.RemoteObjectImpl.mycallback (chrome-devtools://devtools/bundled/inspector.js:4947:18)
    at callback (chrome-devtools://devtools/bundled/inspector.js:3117:148)
    at Protocol.InspectorBackend._AgentPrototype.dispatchResponse (chrome-devtools://devtools/bundled/inspector.js:3124:10)
    at SDK.Target._onMessage (chrome-devtools://devtools/bundled/inspector.js:3081:56)
    at SDK.MainConnection._dispatchMessage (chrome-devtools://devtools/bundled/inspector.js:3257:41)
    at Common.Object.dispatchEventToListeners (chrome-devtools://devtools/bundled/inspector.js:395:23)
    at innerDispatch (chrome-devtools://devtools/bundled/inspector.js:919:98)
innerDispatch @ inspector.js:919

Hope it helps you guys. Can help with more info if you tell me what you need.

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@dgozman: do you think your recent change might have fixed it?

Alexey, let's fix this specific place with null-check.

I'm also having the same problems:
Linux Mint 18.1 64-bit Chrome version: Version 58.0.3029.81 (64-bit)

On 2 separate machines, but both have the same Os's and Chrome.

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The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/81ccbcd9c5b6de950869d165794b7072a6ee7769

commit 81ccbcd9c5b6de950869d165794b7072a6ee7769
Author: dgozman <dgozman@chromium.org>
Date: Tue May 02 23:33:21 2017

[DevTools] Check location for null when creating EventListener

BUG= 700876 

Review-Url: https://codereview.chromium.org/2854853004
Cr-Commit-Position: refs/heads/master@{#468814}

[modify] https://crrev.com/81ccbcd9c5b6de950869d165794b7072a6ee7769/third_party/WebKit/Source/devtools/front_end/sdk/DOMDebuggerModel.js

hi guys this is not working, 
still the same issue as reported above some times it shows the events 
some times id does not 
also it does not show all the events 
I am on Version 59.0.3071.115 (Official Build) (64-bit)

The same issue here, empty Event Listeners:

Version 59.0.3071.109 (Developer Build) Built on Ubuntu , running on Ubuntu 16.04 (64-bit)
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