995205 - Screen is frozen although engine is still loading pages.

Status: UNCONFIRMED

(Core :: Layout, defect, P3)

Description

[lincrosenbach]

User Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.154 Safari/537.36

Steps to reproduce:

Our "web app" runs on Firefox/Xulrunner on an ATM machine. The "app" runs for a long period of time and suddenly the screen freezes. Nothing special was done to cause this freezing. We have seen this problem since we updated the Firefox version to 25, previous versions we used (version 15) did not had this problem.




Actual results:

The "app" runs for a long period of time and suddenly the screen freezes.

We investigated our logs generated from Javascript files and we could see that the engine was still working, i.e., pages were being loaded after the screen was already frozen.

I will attach a screenshot of the frozen screen and a portion of our JS logs showing that pages were still being loaded after the screen was frozen.

If you look on the screenshot of our "app", you will see the time when the screen freezed because there is a clock running on main page.

If you look on our logs, you will be able to see that pages were loaded even though the screen was frozen.

We also have a memory dump of xulrunner.exe when the screen was already frozen but it has 180MB, so I don´t know how is the best way to send this. For now, I will not attach it here.


Expected results:

Well, we expected the screen not to freeze.