I have the problem on Linux since a while that google's multi-account login is not working anymore in Firefox. Note that this seems to work fine on Mac. To reproduce: log in a google account (e.g. gmail); open a second tab and log into another google account. Expected behaviour: two tabs with two different accounts both being logged in. Actual behaviour: the first google account gets logged out (google says another account logged in and refreshes the page with the second account)
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