Try storing this character in different locations: git commit message, top-level review message, and inline comment (which is encoded differently in NoteDb). This test would not pass under MySQL without configuring it to use utf8mb4[1], but does pass under H2. [1] https://medium.com/@adamhooper/in-mysql-never-use-utf8-use-utf8mb4-11761243e434 Change-Id: I74a3b492507f3db2d9b2a84d8945d12eee63bad6