Minecraft ver.: 1.14.1
Fabric Loader: 0.4.7 build 147
Fabric API: 0.3.0 pre build 157a
Issue:
When going to a place where ice spikes should generate, only snowy tundra generates.
Tested using seed -7498160597261473799 at coordinates
X: -13232
Z: -4408

When loaded the location with no fabric API in my mods folder, the ice spikes generates normally.
When I put the fabric API in my mods folder, there is no ice spikes.

Do you have any mods installed that add biomes?

The only thing I have in my mods folder is the api.

Just commenting that I tested this out and I get the same world generation in both instances.

With fabric-api-0.3.0-pre+build.157a.jar and ModMenu-1.5.4-85.jar in mods folder:

Nothing in mods folder:

I think I found what's causing the problem. When I reinstall fabric, the ice spikes biome generates correctly, but as soon as I enter my main world ice spikes will stop generating even newly created worlds.

Fixed with the latest version.