Sandstone foundations not snapping properly

Game mode: | Singleplayer]
Problem: [ Bug]
Region: [US]

Sandstone foundations will not snap together close to water in the southern river area—specifically near-ish The Dregs, if it matters. If I place a sandstone foundation, it will happily snap alongside (parallel to the river) or on the side opposite the river, but it abjectly refuses to snap anywhere closer to the water. Note that I am building on dry land; I am not trying to build IN the river.

Steps on how to reproduce issue:

  1. Build sandstone foundation
  2. Place on shores near southern “noob” river
  3. Attempt to snap a second foundation closer to the water
  4. Snap your gorram controller in half after struggling for 30 minutes