Some iOS versions refuse to show ‘69’ as the temperature in iPhone Weather app
9to5mac.com
9to5mac.com
Hopefully they've not gone ultra-puritan and decided an innocent number needs to be banned just because some adults know what it refers to and giggle about it...
(I assume it would do the same in Celsius, but have been unable to test.)
Which is technically more correct than +0°F, but I've seen people call it a bug.
It seems to only be on some versions and components.