Opening an issue on github per your request. We were just discussing it in the comments on Nexus. I think I have attached the farm data you requested? Please let me know if this isn't the right thing. The only one that should matter is the file labelled "Deepwoods," but I left both of them in there just in case since that is how the data folder appears. I'm not sure where the Seelie save came from because I am playing on a totally unrelated map for that farm.

data.zip

To respond to what you said on Nexus:

Yeah, I don't see anything in the log which would explain why that would be happening. The beach forage (some of it) and ore spawning are both handled by vanilla methods, so unless one of your mods changes what tiles those types of forage can spawn on in vanilla, I can't imagine why it would be doing that. The mod does have an FTM component, which does handle some beach forage, but only within the beach coordinates. Ore spawning in FTM is completely disabled.

The only thing I have that should affect forage spawns that I know of is FTM. I do have several of Wildflour's Atelier mods which add forage, but I don't think any of those should affect how vanilla forage spawns.

Okay, I didn't see anything immediately alarming in the data there - I am a bit fried atm so I might take a deeper look tomorrow. Do you happen to have any screenshots? Wildflour should definitely not affect this - I play with it, too, and can't say I've experienced this haha.

Oh, also, is this a new save? I'm assuming so, and even if not - I switched farms mid-save in my main playthrough without issue, but I figured I'd check.

This is a new save, yeah. I always start fresh on a new farm map because I don't want to fiddle with transferring everything over and regenerating foliage and stuff.
I've snagged some screenshots of areas I cleared the last time I played, with the spawned in rocks and some shellfish.

Hmmm. Can you try deleting the mod (while the game is closed obviously) and reinstalling it fresh? I'm wondering if there was some file corruption or something.

If you are up for that, all FTM-managed forage will be cleared and reset (that's what's stored in the data folder you sent me), and you'll need to redo any config options you have set. Otherwise it shouldn't negatively affect your save. And then hopefully the issue doesn't reoccur. 🤞

I did that, and I also went ahead and deleted and re-installed farm type manager. I then played a full day so a new day with new forage could spawn, but that did not fix the issue.
I am going to try to start a new file now and see if that fixes it.