THREE.Points particle sprites are not scaled correctly by the THREE.Water shader. Freeciv WebGL uses THREE.Points with sprites to implement trees on the map, however, the trees looks too large when reflected in the ocean. I have attached a minimal test-case which is a modified webgl_shaders_ocean.html from Three.js.
This is using the latest version of Three.js (r86). This can also be tested in production on play.freeciv.org.
Attached source of minimal testcase: