When choosing the forecast "wind"-tab for any given (land, not sea) location, the directional arrows comparing the different forecast models, seem to display the forecasted wind speed at 0 MASL elevation for that location, even though the location is a mountain peak.
Hence, I have to use the "airgram"-tab and manually translate elevation of location to atmospheric pressure (HPa) to obtain knowlegde of the forecasted wind at the mountain peak.

The Altitude-slider does not effect the

This seem to be a bug, since the forecast tab provides the geographical elevation under the "about the location" info.

Example: "wind tab" should display winds for location 933 MASL, but displayed numbers are for 0 MASL.

Wind speed at 0 MASL:

Wind speed at 900 MASL: