Created attachment 8893721 [details] back button.png Also for me on Windows 10 and gfx.webrendest.enabled is true
fx_bug_screenshot.png is a duplicate of bug 1383879. `back button.png` does not look related to this and probably was related to a bug with webrender. You should re-test and file a new bug if you can still reproduce with the latest Nightly.
Status: NEW → RESOLVED
Last Resolved: 6 months ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1383879
status-firefox57: affected → ---
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