I haven't messed around with alternative station tracks with this at all, actually. Could you let me know which ones you're using so I can take a look? Also, just to check, is CommonAPI ahead of this in the load order?

Common API is above all mods (lower load number) which are tracks or use tracks - and it works well with every other station - vanilla or mod.

In my case I tried to use a track that was provided by the eis_os_com_modularstationadapter_1 which converted a "normal" track and offered it as a station track.
It was the
mods\rheingold_db_gleisset_mod_1\res\config\track\holzschwellen_40_keine_oberleitungsmasten.lua
(wooden sleepers, 40 kph, no catenary) from https://www.transportfever.net/filebase/index.php?entry/4933-DB-Gleisset-Mod/

So I think I see the issue in the code, but I don't see how to get around it without conflicts. Could you point me to a modded station that is behaving the way you want?

Sorry, I was wrong (it was late, I was tired), actually the track that was offered was a real station track (not a converted one - and the whole "conversion" thing seems not to exist as it was a misleaded assumption):
mods\ccjohnson_catde_2\res\config\track\cj_catde_hs_040_50_station.lua
aka. "Tracks DE high speed 40km/h-50m"
from "CC Johnson's All-in-one Tracks Series: Deutsche Gleise/Masten"
-> https://www.transportfever.net/filebase/index.php?entry/4965

And this also happens with other mods now like with the "NL Modular Station" so I guess I have to look elsewhere for the issue ...

Actually I feel relatively sure that your mod indeed is the culprit for this issue.
Investigating ...

Darn, it's not easy to find the culprit - it could be only one mod or even a combination of some specific mods.

@[190]Yocto
Hi, I love this mod, I use it on every map, I'm currently creating a yard that is elevated (about 8-10m above road/ground level, but the platforms obviously cause the ground to alter, would it be possible to create a platform module with no ground under it, so that the ground does not taper up, & I could use assets to infill this space to make it appear that the freight yard is on a viaduct.

Cheers
Jimbo