When I came back to use build 157, I noticed a quirk on my iPad: using my normal gesture of touching an album in the album browser didn’t open it, but instead selected it (with the button bar along the top). A really, really quick touch did open it. But a normal tap behaved like a long press had behaved before.
I did not see this behavior on the iPad mini or the iPhone, nor on any Windows touch devices.
It did recur for two days on the iPad, but today as I am writing this the problem has gone away.
Such non-repeatable quirks are frustrating.