Possibly related to this: https://mods.factorio.com/mod/RailLogisticsDispatcher/discussion/6385a0b89060ca7403e02763
Autobuild (https://mods.factorio.com/mod/autobuild) will build dispatchers without their settings. Unfortunately my computer died before I could test literally anything but "set a request, copy + paste the dispatcher and station, and turn on autobuild"; I didn't even get to try building the ghost by hand. I intend to uninstall RLD for now, rather than testing it further. (My computer dying was unrelated to RLD in particular, but Factorio does make it die quicker, and loading a testing environment and stuff would exacerbate that.) I hope you understand, and are able to replicate my issue despite the lack of any further testing on my part.