IKEv2 tunnels fail to establish after upgrading to 7.17 (between 7.17<->7.17 and 7.17<->7.16.2). However, 7.17 does establish IKEv2 with Huawei AR (same settings). Rolling back to 7.16.2 does fix the issue. Auth method is PSK, 7.17 peer sends "Delete" right after successful IKE_AUTH. Test...

The issue has been identified, and we look forward to fixing it on upcoming RouterOS versions

Quick update:
Just tried quickly on 7.11 beta and rc builds and it indeed appears to be fixed!
Good work!

I'm glad I'm not the only one who noticed this... rsa private keys used to work fine in 7.8 . It suddenly stopped working at around 7.9beta4 when ed25519 was introduced. But even keys with ed25519 don't work now. I guess something got broken with the new ssh code. Unless something changed in the way...