I have verified the fix in Nightly v71.0a1 (2019-10-08) (64-bit) by the same method (opening the test page in comment 0 and clicking the "Click Me" button. Verification was performed on Windows 10 x64. Logs: "
Bug 1577107 Comment 35 Edit History
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I have verified the fix in Nightly v71.0a1 (2019-10-08) (64-bit) by the same method (opening the test page in comment 0 and clicking the "Click Me" button. Verification was performed on Windows 10 x64.