Created a new database and added some tables to it. The tables didn't show in the database, I found them in the master database.
It seems they are indeed in the correct database, but aren't displayed there.
Below is a screenshow of DataGrip and SSMS side-by-side:
Build #DB-172.4574.13, built on November 15, 2017
JRE: 1.8.0_152-release-915-b12 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 10 10.0