I\'m updating an app developed for iOS 8 (kinda old), but I\'m having issues on the first time the keyboard is being displayed after recent iOS 13 update:
Keybo
So... this old project had a library called UI7Kit into its Pods, which was causing this weird mess. I just had to delete the references to it into the Podfile (as it's not necessary anymore anyway), and reinstall Pods. I'm leaving this answer in case somebody has the same issue in the future with an old project. Thanks to everyone who tried to help!