ASL in telemetry making tracker useless

Not sure why but when I flashed the newest stable 4.1 with Qgroundcontrol on Matek F405wse my telemetry gives altitude reading as ASL. This makes my tracker and even yaapu telemetry widget useless as I get bad altitude readings - it starts with altittude of 300 so my tracker is pointing UP from start.

OSD shows good altitude value.