FW 11.0 Elevation plot broken?

Yesterday I tried to use the Hike app together with navigation following a prepared course. The Elevation plot shows me the elevation along the course, but after nearly half the way, nothing changed on the screen. So the watch didn't marked the part already behind me. Still the whole plot was Blue. Today I tried Bike app, but the same behaviour. Does anybody else have this problem, or this is only on my watch (Fenix 5x Plus, fw 11.0, gps 2.60)?