I've been experiencing a similar issue but in reverse, I had the new home enabled and since we aren't enabling instance-wide yet, I changed my own back to legacy home, and every new WF session I'd keep getting the new Home. It's like it's only remembering what was recently set. There were updates with this week's release with Home, I'd submit a support ticket to see what's the expected behavior for users that don't have it enabled instance-wide but have opted for new or chosen legacy. Report back here!
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