Events column missing sort order arrow at some sizes

See attached, notice that there is no arrow in the Timestamp column on the Support>Analytics>Events page, despite the fact that's the default sort order.
If I full size my browser, it shows.
Weirdly, other smaller columns on other pages work fine (see attached). May be a fix there.

My browser size when I saw this was: 996 (I also checked 1028 which is more than the minimum size we support)
The column size (width) when I saw this was: 91
(#s gleaned by using mac command-shift-4 "ruler")
If there's more info that would be helpful let me know.

I did not back check older NX3 or NX2 at this time.