I've seen it do that for decades now, and in at least two cases I see it happen is when a highway enters town and gains a name, like how Florida Route 92 becomes International Speedway Boulevard when you enter Daytona Beach. Or, when another route joins the corridor you're on, like throughout North Carolina US-1, US-15 and US-501 weave in and out of each other a few times along with a few state routes joining and leaving.
So I think when it hits points like this, it sometimes interprets them as intersections rather than junctions, and its programming requires it to issue a direction for an intersection. YOU might not see it as an intersection but IT does.