[BUG] Opening a hidden channel/dm throws exception and does not show on sidebar

[mikaelmello]

Description:

When you open a room that is hidden, two exceptions are thrown: Exception in queued task: Error: Can't set timers inside simulations and Exception in queued task: Error: Unknown id for changed: <roomId>

Server Setup Information:

• Version of Rocket.Chat Server: 0.64.0 (reproducible on open.rocket.chat)
• Operating System: Elementary OS
• Deployment Method(snap/docker/tar/etc): Development
• Number of Running Instances: 1
• Node Version: v8.11.1

Steps to Reproduce:

1. Open the browser's dev console
2. Hide any channel or DM
3. Go to the sideNav search and try to open the hidden channel or DM.

Expected behavior:

1. A clean console
2. Room open (check)
3. Opened room being listed in the sideNav

Actual behavior:

1. Two exceptions thrown are logged into the console
2. Room open (check)
3. Opened room not listed in the sideNav

Note: This behavior isn't consistent, sometimes it works, sometimes it does not.

Bonus bug:

If there are no current opens in a room section (example, no channels opened and "You are not part of any channel" displaying), when you open a hidden channel, the message is gone because there is a room now but it crashes before displaying.

[mikaelmello]

The exception is thrown during the simulation of the openRoom method on client/methods/openRoom.js, called on packages/rocketchat-lib/client/lib/openRoom.js:79. A quick hack is to comment out the simulation method and everything will work as intended, but there is probably a good fix for it.