Very need gps_rescue_alt_mode = FIXED_ALT & osd_nvario not work

[aLDime]

Is your feature request related to a problem? Please describe.

1. The accumulation of altitude is unacceptable, the copter at some point rises very high and loses the signal!
2. The display of the rate of climb / fall heights doesn't work on OSD

Describe the solution you'd like

1. Need gps_rescue_alt_mode = FIXED_ALT
2. Bug fix

Describe alternatives you've considered All this is in BF and iNav, this is Must Have!

Additional context gps_rescue_initial_alt = 70, but altude increased up to 150m osd_nvario not work

[nerdCopter]

What version are you running? i think there was baro calculation fix in dev versions, not yet released. do you know about the dev-master builds?