I found the following how-to:
https://chadschultz.azurewebsites.net/2020/05/21/azure-vpn-gateway-and-mikrotik-ipsec-ike-configuration/
I think it can be useful for you!
According with one of the latest text extract:
"Make sure that there were NAT rules added when adding the IPSEC Policy. There should be 1 srcnat chain for outbound and 1 dstnat chain for inbound traffic."
did you configure srcNAT and dstNAT?