STR: Enable vertical tabs in about:preferences that will also enable the new sidebar Toggle the sidebar toolbar button twice to first hide and then expand the sidebar Disable the new sidebar while still in expanded state Reenable vertical tabs Should probably be fixed and/or investigated alongside bug 1944627
Bug 1944842 Comment 0 Edit History
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STR: Enable vertical tabs in about:preferences that will also enable the new sidebar Toggle the sidebar toolbar button twice to first hide and then expand the sidebar Disable the new sidebar while still in expanded state Reenable vertical tabs This looks to be the same issue we were seeing in bug 1936839.
STR: Enable vertical tabs in about:preferences that will also enable the new sidebar Toggle the sidebar toolbar button until it expands the sidebar Disable the new sidebar while still in expanded state Reenable vertical tabs This looks to be the same issue we were seeing in bug 1936839.