No bridges after engineering

[biasless]

deleted cache, no mod conflicts i know of

turned on debug mode for the turns before to after engineering is researched
doesn't mention it in the lua.log thingy, 2 entries in net_message_debug.log for with engineering word

no idea what to do, have all 4 mods on map, interface, gameplay, and ai

-----edit

if i remove gameplay part bridges appear

only other mod is really advanced setup