After I open an ArcGIS Pro project, the ribbons at the top are basically frozen. They are not greyed out, but I cannot switch ribbons or select any of the visible tools. Basically, everything in the yellow circled area below is unclickable.
However, I can click tools in the quick access toolbar, and I can open the Sign-in Status dropdown. And by messing around I've discovered a workaround: if I open Sign-in Status dropdown and click Manage Portals, then back out of the Portals menu, at that point the ribbons become unfrozen and I can use everything normally.
Anyone else experiencing this? I haven't found any existing discussions about the issue. I already tried reinstalling Pro to see if it was a glitch unique to my install. The issue persists after reinstalling.