I am using a RB4011 as my main router with optical pppoe ISP as my main ISP and a WAP LTE device for failover ISP. Everything work fine except static route for the WAP LTE.

What i did:

WAP LTE:
I have created 2 vlans on ether1. (wlan disabled)
1 vlan for mgmt and 1 vlan for LTE passthrough interface.
For mgmt i add vlan-mgmt to dhcp client.

RB4011:
Added vlan-isp to dhcp client and i am recieving wan ip from LTE device.
Added vlan-mgmt to bridge so WAP LTE is reachable via IP address.

Now on my IP Route i have added my PPPoE interface manually (Distance 1) so i can add a comment.
BUT when i do the same with my vlan-isp i get the message "reachable" but no wan IP is showing up (no internet connection).
When i set "add route" on dhcp client with distance 10 everything works fine. WAN ip is showing up and internet is available but i can not add a comment or change things.

Attached 2 screenshots with "add route" option where you can see WAN ip and without "add route" (manually added to IP Routes).

Does anyone has clue what i am doing wrong?