Hi, I can reproduce this issue on my machine win 10 on Firefox Release 74, Firefox Beta 75 and Nightly 76 with Firefox Multi Account Containers enabled and steps mentioned above.
Bug 1620757 Comment 1 Edit History
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Hi, I can reproduce this issue on my machine win 10 on Firefox Release 74, Firefox Beta 75 and Nightly 76 with Firefox Multi Account Containers enabled and steps mentioned above. I will set the component: Firefox Tabbed Browser, if it's not the right one please feel free to change it,\ Thank you!