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That does seem odd.
Ironically, micronised creatine is designed to reduce clumping in your drink and (supposedly) improve stomach discomfort, and micronised creatine is usually the same as regular creatine monohydrate but just with a smaller particle size.
What is the exact type of creatine, brand etc? Are there any extra ingredients added other than the micronised creatine? Does the creatine look discoloured/off in any way?