I would also like to chime in that we've noticed this issue occuring lately (possibly after upgrading to 11.4). There's also several people using a Security wrapper that noticed this started occuring around the same timehttps://github.com/TakeScoop/SwiftyRSA/issues/183I would also like to reiterate that this is a very often used code on our side for the last several years and it has only started failing with the last (or possibly second to last version of Xcode) so it's a regression either introduced in 11.3 or 11.4. It's also tricky as it doesn't occur every single time a chunk of data is encrypted so it's a bit tough to reproduce, otherwise I would provide more specific examples.