On my Forerunner 965 on software version 4.19, the Elevation overview screen shows elevation gain history (upper left) in ft climbed while the elevation gain remaining (upper left) is displayed in meters. The screen for an individual climb is correct.
The photo attached shows that I was at approx 2000 ft, climbing to approx 5200 ft (net 3200 ft gain) while the gain remaining shows 1063 m to go (3487 ft).