[Database Source] SSH: Unable to find host/port in URL

 Hi! I'm trying to make use of IDEA/Datagrip's built in SSH Tunneling feature for database connectivity. As soon as I enable it, I get the warning: 

Attempting to connect, even after trying to create a template, results in:

2018-03-08 11:33:08,496 [139600121] WARN - lij.database.util.ErrorHandler -
com.intellij.execution.ExecutionException:
 at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:164)
 at com.intellij.database.console.JdbcDriverManagerImpl.getDriver(JdbcDriverManagerImpl.java:128)
 at com.intellij.database.dataSource.DatabaseConnectionEstablisher.lambda$establishConnection$1(DatabaseConnectionEstablisher.java:56)
 at com.intellij.database.dataSource.AsyncUtil.lambda$null$4(AsyncUtil.java:49)
 at com.intellij.database.dataSource.AsyncUtil.lambda$underProgress$14(AsyncUtil.java:127)
 at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:495)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:94)
 at com.intellij.database.dataSource.AsyncUtil.underProgress(AsyncUtil.java:133)
 at com.intellij.database.dataSource.AsyncUtil.underProgress(AsyncUtil.java:127)
 at com.intellij.database.dataSource.AsyncUtil.lambda$captureIndicator$5(AsyncUtil.java:49)
 at java.util.concurrent.CompletableFuture.uniComposeStage(CompletableFuture.java:981)
 at java.util.concurrent.CompletableFuture.thenCompose(CompletableFuture.java:2124)
 at java.util.concurrent.CompletableFuture.thenCompose(CompletableFuture.java:110)
 at com.intellij.database.dataSource.DatabaseConnectionEstablisher.establishConnection(DatabaseConnectionEstablisher.java:53)
 at com.intellij.database.dataSource.DatabaseConnectionManager$Executor.supplyAsync(DatabaseConnectionManager.java:381)
 at com.intellij.database.dataSource.DatabaseConnectionManager$Executor.createInner(DatabaseConnectionManager.java:321)
 at com.intellij.database.dataSource.DatabaseConnectionManager$Executor.lambda$sync$2(DatabaseConnectionManager.java:301)
 at com.intellij.database.dataSource.AsyncUtil.withAsyncFriendly(AsyncUtil.java:158)
 at com.intellij.database.dataSource.DatabaseConnectionManager$Executor.sync(DatabaseConnectionManager.java:298)
 at com.intellij.database.dataSource.DatabaseConnectionManager$Builder.sync(DatabaseConnectionManager.java:112)
 at com.intellij.database.dataSource.DataSourceSyncManager.lambda$static$1(DataSourceSyncManager.java:39)
 at com.intellij.database.dataSource.DataSourceSyncManager$SyncProcessor$1.perform(DataSourceSyncManager.java:242)
 at com.intellij.database.dataSource.DatabaseModelLoader$IntrospectionSession.updateDatabaseInfo(DatabaseModelLoader.java:283)
 at com.intellij.database.dataSource.DatabaseModelLoader$IntrospectionSession.run(DatabaseModelLoader.java:266)
 at com.intellij.database.dataSource.DataSourceSyncManager$SyncProcessor.performSync(DataSourceSyncManager.java:244)
 at com.intellij.database.dataSource.AsyncUtil.lambda$null$6(AsyncUtil.java:55)
 at com.intellij.database.dataSource.AsyncUtil.lambda$underProgress$14(AsyncUtil.java:127)
 at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:543)
 at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:488)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:94)
 at com.intellij.database.dataSource.AsyncUtil.underProgress(AsyncUtil.java:133)
 at com.intellij.database.dataSource.AsyncUtil.underProgress(AsyncUtil.java:127)
 at com.intellij.database.dataSource.AsyncUtil.lambda$captureIndicator$7(AsyncUtil.java:55)
 at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
 at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:315)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 at java.lang.Thread.run(Thread.java:745)
Caused by: com.intellij.execution.ExecutionException: SSH: Unable to find host/port in URL
 at com.intellij.database.console.JdbcDriverManagerImpl.createTunnel(JdbcDriverManagerImpl.java:185)
 at com.intellij.database.console.JdbcDriverManagerImpl.access$000(JdbcDriverManagerImpl.java:35)
 at com.intellij.database.console.JdbcDriverManagerImpl$1.getRunProfileState(JdbcDriverManagerImpl.java:78)
 at com.intellij.database.console.JdbcDriverManagerImpl$1.getRunProfileState(JdbcDriverManagerImpl.java:44)
 at com.intellij.execution.rmi.RemoteProcessSupport.a(RemoteProcessSupport.java:213)
 at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:143)
 ... 39 more
Caused by: java.lang.UnsupportedOperationException: Unable to find host/port in URL
 at com.intellij.database.dataSource.DataSourceSshTunnelConfiguration.createTunnel(DataSourceSshTunnelConfiguration.java:140)
 at com.intellij.database.console.JdbcDriverManagerImpl.createTunnel(JdbcDriverManagerImpl.java:177)
 ... 44 more

 My ssh-agent is running and working. Host is configured in OpenSSH config. Trying built-in keypair settings makes no difference. Using an IP address makes no difference. I've had this problem before on Datagrip too. (2017.x)

I'm using:

IntelliJ IDEA 2017.3.4 (Ultimate Edition)
Build #IU-173.4548.28, built on January 30, 2018
Licensed to (redacted) / Mike Heyns
You have a perpetual fallback license for this version
Subscription is active until November 30, 2018
JRE: 1.8.0_152-b1119.3 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Linux 4.15.5-1-ARCH