Do you have reported this to Mikrotik and if, what is your support ticket id?

Reported just now. Ticket id is 2018061322004299

Bug in 6.43rc23: Upgrade from previous version to 6.43rc23 when you have /ip ipsec peer proposal with hash-algorithm=sha512 Open this proposal in Winbox. You will see that in Winbox it have checked md5 and sha1, but in the export it have sha512 Set hash algorithm to sha512 through Winbox, now autosu...