No Internet connection when in STATIONAP mode

[KKoovalsky]

I'm struggling with sta+ap mode and SNTP. When I upload sketch with ap+sta mode I can't connect to remote NTP server. DNS of server gets resolved (LAN connectivity works fine), but after DNS resolving station calls udp_sendto with with result ERR_RTE (so no route to host). When I upload the same FW but with STATION mode I can connect to NTP server without any problem. Is it bug or feature? I mean, is just Internet connection from station forbidden when AP is working simultaneously?

[ourairquality]

With lwip v2 #389 it is now possible to bind a pcb to an interface and doing so might be a solution, so adding the following to sntp_init gets this working in sta+ap mode:
udp_bind_netif(sntp_pcb, sdk_system_get_netif(0));