I beg to differ. I've been flying 3.1.15 since 8/27 and am still experiencing the issue intermittently. the work around (of closing the app (iOS) and relaunching), solves the issue, as it did before, but it's still happening to me. I've found it does not happen every time I do a battery switch and refly without closing the app, (I usually power down the RC, then AC, then switch batteries.) but when it does (about 1 of every 3 flights), I can hover for a brief moment at 30m, close and relaunch the app, and the limits are again gone. Takes less than 10 seconds, but annoying.
I've observed, that up to this point, it never happens on my initial flight of the day.