Starting with the 4/19 nightly build I'm experiencing excessive CPU usage causing scrolling and painting delays, delays switching and closing tabs. This happens on a clean profile and doesn't seem to depend on which pages are loaded in the browser. Tested on Windows 10.
This is probably a dupe of bug 1357872. Will close it if the fix there fixes this. Also my previous bug report, bug 1357823 was also probably this ghost windows bug as well.
Was your issue fixed?
Status: NEW → RESOLVED
Last Resolved: a year ago
Resolution: --- → WORKSFORME
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