Updating default apps automatically resets them in iOS 14.1, fix might arrive in iOS 14.2
HT Tech tried updating Gmail app while keeping it as a default email app on iOS 14.2 and was not able to replicate the bug.
Just last month we witnessed an iOS 14 bug that changed the default email and browser apps to Apple's own Mail and Safari even after you changed it. However, the company did patch it later with an update to iOS 14.0.1. But it looks like a similar issue has cropped up again. This time it has been found out that when you update the default app like Gmail or Microsoft Edge from the App Store, it automatically changes the default app slot. As shown by a Twitter user, this bug has been spotted in iOS 14.1 update that just got released for non-beta users yesterday.
It is being said that Apple may have fixed this issue with iOS 14.2, which is in beta right now. HT Tech tried updating Gmail app while keeping it as a default email app on iOS 14.2 and was not able to replicate the bug.
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However, in case you are on iOS 14.1, having to reselect the default browser or email client is just one step towards annoyance if nothing else. And in case you have automatic app update enabled, you may have seen the default apps changing to Mail or Safari without even letting you know.
iOS 14.1 is the first major update after iOS 14 that was released last month. While most of it is about bug fixes, Apple has also added support for 10-bit HDR video playback and edit in the Photos app for iPhone 8 and later. iOS 14.1 can be downloaded on compatible iPhones starting from the iPhone 6s. If you haven't been notified about the update you can manually check by going to Settings > General > Software Update.