Spring boot 2.1.0 Hikari CP bad password - spring-boot

Question

So I updated my Spring Boot to 2.1.0, and now hikari is the default CP. According to some SO questions related to this I no longer needed to use the .hikari in my application.properties file. My properties file now looks like this:
# H2
spring.h2.console.enabled=true
spring.h2.console.path=/h2
# Datasource
spring.datasource.url=jdbc:h2:file:~/deployHistory/deployHistory
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driver-class-name=org.h2.Driver
Now if I use the driver manager directly, like this:
Class.forName("org.h2.Driver");
Connection conn = DriverManager.getConnection(databaseUrl);
Statement stat = conn.createStatement();
stat.execute("create table ...)");
stat.close();
conn.close();
It all works fine, However, when I use the Spring Boot JDBC template, and do a simple:
jdbcTemplate.update(...);
I get an error:
2018-11-26 14:27:54.772 INFO 7349 --- [nio-8080-exec-1] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2018-11-26 14:27:56.059 ERROR 7349 --- [nio-8080-exec-1] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.
org.h2.jdbc.JdbcSQLException: Wrong user name or password [28000-197]
What is the way to fix this? All the pre-2.0.4 answers don't seem to work.