On pc Debian x86-64 with master sources updated today, I don't reproduce this.
However since I use MariaDB server, I couldn't create the table with utf8mb4_0900_ai_ci since I had an unknown collation error.
I used utf8mb4_general_ci instead.
Also have in mind that the native connector used by LO is in fact MariaDB not Mysql one. (mariadb-connector-c-3.1.8-src.tar.gz)
On pc Debian x86-64 with master sources updated today, I don't reproduce this.
However since I use MariaDB server, I couldn't create the table with utf8mb4_0900_ai_ci since I had an unknown collation error.
I used utf8mb4_general_ci instead.
Also have in mind that the native connector used by LO is in fact MariaDB not Mysql one. (mariadb- connector- c-3.1.8- src.tar. gz)