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Solved Problem
When working on PRs I was going nuts about the figure eight test failing more often than not.
Solution
wait_until_altitude() checks for absolute altitude being close so checking for 1m below the setpoint can fail if the speedup results in no sample inside the altitude window being checked.
Changelog Entry
Alternatives
Ideally the test could check if the takeoff is done directly instead of comparing altitudes in the first place.
Test coverage
I successfully ran the test 100 times with the altitude thershold 5 times narrower at 10cm instead of 50cm. Without the fix I had it fail locally basically every single time.