This isn't supposed to happen I assume 😉
I've been able to do this a few times already, but it only happens very rarely and I've been too scatterbrained to be able to reproduce this so far. But I believe I know how this happens now ...
I've got three Fusion 360 icons in the doc, of which the 2 to the right are active instances of Fusion 360.
This morning Fusion 360 updated (edge aligned surface lofts. Yummy!) and I followed the suggestion and restarted it after the update.
Once re-started instead of clicking on the 2nd icon in the doc, which was the active instance of Fusion 360, I clicked on the most left Fusion 360 icon and started a second instance.
@Phil.E nothing too scary, but maybe worth checking out.
