UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3135.0 Safari/537.36

Steps to reproduce the problem:
-install extension from attachment, it is using event page and it should unload after couple of seconds ~10 (task manager shift+esc)

-extension is doing simple job, in background and in content script there is a storage listener that will console log some text

-open any non-chrome page (www.google.com)

-on button click extension will write something to local storage (timestamp) and console log message in background and content script 

-after that, extension is left hanging in Task Manager.... it should unload after couple of seconds, but it doesn't

-culprit is content script listener, because if you have only chrome internal page opened (eg. settings or history) and press the button, event page will work as it supposed to (you need to have fresh session or reload extension, otherwise extension is bugged from previous attempts)

-there is no errors of any kind for this situation, it's just that event page gets bugged

What is the expected behavior?

What went wrong?
.

WebStore page: 

Did this work before? N/A 

Chrome version: 61.0.3135.0  Channel: n/a
OS Version: 10.0
Flash Version:
 

Deleted: test storage listener.rar 1.1 KB

test storage listener.rar 1.1 KB Download