When talking to any of the scouts in Blazeridge Steppes they don’t actually finish their dialogue. About halfway through their talking it fades out and the map closes. Talking to them a second time allows them to get further in their dialogue, a third time allows them to complete it.
I have not come across this issue in any other zone or with any other scouts so I guess it might just be Blazeridge, but certainly something that should be looked into.