Bug report: cannot send location to Edge 540

I found a problem with Garmin Connect iOS app 5.27.2.

I'm trying to send map location from my iPhone to Edge 540 as usual:
Find something in Apple maps, using share button send it to Garmin Connect, after a while my device appears, but when trying to send the location to it, nothing happens. I'm tapping the button "start workout", but no reaction - no usual spinner popup, no error, simply nothing happens.

It used to work on last Sunday (09 Aug). Then probably my phone auto-updated the app when it was charged and today it did not work anymore.