Landing detection before it even takes-off

Dear All, @JulianOes, @bresch, @sfuhrer, @rroche, @mohammad

I occacionally have an issue at take-off. When Mission is started, the PX4 switches mode to Mission and Armed mode. But, shortly after that, it detects landing before even taking-off. The same issue repeats until I cycle the power. Does anybody have any idea about the root cause of this behavior?

Here there are three example logs:

Kind regards,