I have performed the regression range using Mozregression, on Windows 11 and the issue is reproducing starting with Firefox Nightly 101.0a1 (2022-04-27), where the Picture in Picture toggle is displayed for the first time, on disneyplus.com. On the previous build (2022-04-26) the PiP toggle is not displayed disneyplus.com, so it seems that this is not a regression. I am removing the "regressionwindow-wanted" keyword.
Bug 1902268 Comment 1 Edit History
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I have performed the regression range using Mozregression, on Windows 11 and the issue is reproducing starting with Firefox Nightly 101.0a1 (2022-04-27), where the Picture in Picture toggle is displayed for the first time, on disneyplus.com. On the previous build (2022-04-26), the PiP toggle is not displayed on disneyplus.com, so it seems that this is not a regression. I am removing the "regressionwindow-wanted" keyword.