/locate doesn't detect (or ignores) very small instances of Biomes

When using /locate to find the closest instance of a Biome, the command either misses or ignores very small instances of the Biome being searched for.

For example, when using the seed 296111675826092400 and searching for a Mangrove Swamp from where you spawn in, the command returns the closest one being at just over 2800 blocks away, give or take. However, the true closest Mangrove Swamp is actually a tiny one on the shore of a little Jungle peninsula that only has 3 trees. The /locate command, however, doesn’t appear to detect it (or ignores it) unless you’re standing a few blocks within it, which it then detects. The interesting part is that you can walk a block or two into the Biome itself and the command still doesn’t detect (or ignores) the tiny Mangrove Spawn. To see this for yourself, teleport to -209 62 1566 and run the command, then move 1 block North (onto the Mud) and run it again. Do it once more and run it again. Each time it will say another Mangrove Swamp is the closest while you’re literally standing in one when running the command. Only when moving forward for a 3rd time and running the command does it properly detect the Biome.

I know that /locate is supposed show you these tiny Biomes as numerous times I’ve had it look for the closest of a certain Biome only to find a tiny version instead of a much larger and normal sized one. Plenty of times I’ve used it to find the nearest Mushroom Island, only to find a tiny one that’s a mere handful of blocks or less, or even no land at all, just the area in the ocean where the Mushroom Fields Biome is.

Expected Results:
1. Load seed 296111675826092400
2. Use /locate to find nearest Mangrove Swamp
3. Command gives nearest Mangrove Swamp as roughly -209 ~ 1566

Actual Results:
1. Load seed 296111675826092400
2. Use /locate to find nearest Mangrove Swamp
3. Command gives nearest Mangrove Swamp as one that is roughly 2800 blocks from Spawn