Element hiding debug functionality causes hang in older Firefox
Firefox 51.0 / Windows 10 (1903)
Firefox 52.0 / Windows 10 (1903)
Working as expected in Chrome browsers. Working as expected in Firefox 76.0.1 (latest).
How to reproduce
- Open [ABP Icon] > [Options].
- Enable the debug preference via the console.
- Navigate to hide-if-contains test page.
- Add the first filter to ABP.
- Refresh the test page.
Firefox completely hangs/freezes and needs to be killed/reopened.
ABP functionality to not hang Firefox.