PKCS#8 keys can't be loaded in the generic backend

Hi all,

I have created small demo, it has the same key file encrypted and decrypted.
On Linux and Android QSslKey is created from both of them, on iOS QSslKey is null when I try load encrypted key with passphrase.
Subsequently I can't load certificate - no key
On iOS I'm using Qt 5.7.0 from Network Installer with
"iOS Secure Transport, iOS 10.2"

Github repo:
https://github.com/frankipl/qsslkeytest

Best Regards
Marek

(Edit: previous title was: QSslKey is not created on iOS when key is Encrypted)