Bombardier software bug caused incorrect turns on missed approaches...
From The Register -
https://www.theregister.com/2020/05/..._approach_bug/
I can't find a Canadian TSB report into the incident.
There is an EASA AD -
https://ad.easa.europa.eu/ad/US-2020-10-05
Scary!
<I have had a quick scan for existing threads but nothing found. Feel free to move into one should it already exist>