Distributions of Islands on Ocean planets depended on biomes/distributions.config:mainBiomeMicrodungeon
This mod alters the value from 0.3(30% probability) to 0.60(60%) and it had the unintended effect of increasing number of islands generated on Ocean planets.
Ocean biomes have been patched to use the vanilla 30% for islands while keeping intact the 60% microdungeon probaility.