Thank you for being our customer and for being active on this forum. We take testing extremely seriously and reliability is of utmost importance to us (our engineering culture) and, of course, our customers. We utilize extensive testing at both the unit level and in staging changes to test what will happen within a production environment. Accordingly, we navigate the vast majority of changes to our offering while preventing any noticeable effects, on an almost daily basis when considering the breadth of our offering.
In this incident, we encountered an unanticipated edge case in production that testing did not adequately prevent. This incident was immediately escalated to the highest levels of our org, and a fix was built, underwent testing, and was deployed. I, personally, reviewed the root cause and fix, and our testing processes will be amended to ensure prevention in the future.
Again, apologies for the inconvenience and frustration this caused, and we have implemented the fixes and process changes necessary to address the reason this incident occurred.