Ping - Winbox .vs. Terminal mode

RouterOS General
1

Ping using Winbox with interface set to “All” or “ether4” works whilst in terminal mode

[admin@MikroTik] > /ping 64.69.34.1
64.69.34.1 64 byte ping: ttl=53 time=34 ms
64.69.34.1 64 byte ping: ttl=53 time=29 ms
…

but
[admin@MikroTik] > /ping 64.69.34.1 interface=ether1
64.69.34.1 ping timeout
64.69.34.1 ping timeout

Any insight into why one works and other does not?

2