iOS 9 language Apps bug

Hi everyone!

Sorry for my english (I´m spanish)

Since I updated my iphone 5S to iOS 9 (and 9.02), I'm having issues with several apps in my phone. The language of my apps have changed to other languages, in my case in english. However, prior to iOS 9 (iOS 8) i haven´t any issues with this apps (spanish).

I`ve seen in some forums there is a lot of foreign people with the same issue, for example Tomtom, Paypal, Booking app, here you can check it:
https://en.discussions.tomtom.com/t...after-update-to-ios-9-language-english-990070
https://www.paypal-community.com/t5/About-Settings/iOS-app-language/td-p/998751

You can change manually the language in some apps, but in other apps it´s not possible.

I know the most of the people who write in this forum are english native people, however the persons who speak other languages are having issues with some apps.

I don'k know if Apple has changed some code with the detection of the languages/apps in iOS 9, or simply it´s a bug.

If I go to Setting, General, Language and Region, I have the iPhone Language => SPANISH (selected). However sometimes the English is added randomly, and I delete it, but is added again randomly...

There is some apps who are being updated in App Store to solve this issue, however I think this is an iOS 9 bug because in iOS 8.4.1 there wasn´t any issue...

I've read in some forums this issue still persist in iOS 9.1 beta 3.

Thanks everyone