Looking on the internet deeply has found these results:

was not working is the most popular phrase on the web.

has not working 123,300 results on the web	was not working 190,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Input checked has not working in side partial in angular. No problem. We won't show you that ad again. Why didn't you like it? Uninteresting Jan 28, 2016 ... skype desktop has not working for 1 month.. Welcome To get started please read our short introduction. Enter a search word. jQuery .not() and .has() not working properly in IE7. No problem. We won't show you that ad again. Why didn't you like it? Uninteresting Mar 9, 2016 ... Angular Ui router without has not working on IE9. No problem. We won't show you that ad again. Why didn't you like it? Uninteresting	Hitching rides with students was not working out. For about half of our stay the hotel telephone system was not working. Look, I promise you the Door Open button was not working. Obviously, my strategy was not working. The WIFI was not working very well. Robbie McCain was not working alone. It turns out that Dr. Wallace was not working alone. Its SVN browser revision log was not working at the time of writing.

has not working

123,300 results on the web

was not working

190,200,000 results on the web

More popular!

Input checked has not working in side partial in angular. No problem. We won't show you that ad again. Why didn't you like it? Uninteresting
Jan 28, 2016 ... skype desktop has not working for 1 month.. Welcome To get started please read our short introduction. Enter a search word.
jQuery .not() and .has() not working properly in IE7. No problem. We won't show you that ad again. Why didn't you like it? Uninteresting
Mar 9, 2016 ... Angular Ui router without has not working on IE9. No problem. We won't show you that ad again. Why didn't you like it? Uninteresting