Possible bug in whoward's Passable Forts mod?

[StrictlyFilthyCasual]

Not sure if this is the right place to post this. I was playing Civ V yesterday with a couple of whoward's mods. I was attempting to create a fairly extensive canal system, and discovered that if you have the following terrain

Coast - Land - Land - Lake

and you build forts on both those land tiles, boats can leave the lake, but they cannot enter it through these canals. (Screenshots included)

I understand that canals can only be built one tile inland, but does that not apply to tiles next to lakes? Is this a bug, or is this how the mod is supposed to work?

 

[Nutty]

There's a settable flag:

Ships may enter coastal forts/citadels, edit GLOBAL_PASSABLE_FORTS_ANY to permit them to enter any fort/citadel

(from Pick'N'Mix site)

 

[StrictlyFilthyCasual]

Ah, I thought that was a setting that allows Civs to enter each other's forts. Though now that I think about it, you could probably already do that.

Follow-up question: how do I edit that setting?

Edit: Nevermind, figured it out. Thanks!