I've been seeing a lot of flickering in browser content starting with yesterday's Nightly build. I'm not sure it's related to the update yet but the flickering seems to occur mostly when loading a page or when mousing over certain elements. So far I've seen it on Reddit, Google Docs, and Bugzilla. I have not yet been able to capture a screenshot of it occurring. Assuming it is a regression from yesterday's build here is a pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=8b1fc0961a076e35646d0472a81feefc0074558c&tochange=45273bbed8efaface6f5ec56d984cb9faf4fbb6a System Info: Firefox window is on a secondary display (1920x1080) connected to HDMI via Thunderbolt adapter on a MacBook Pro (Retina, 13-inch, Late 2013) with Mac OS 10.11.2 Beta (15C47a).
After an hour of moving the window to my main screen I have not seen the flicker. It only seems to occur on the second screen.
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