Omnichannel visitors no longer able to switch departments in v3.3.0

[GarthKiepper]

Description:

Livechat visitors are unable to change departments because the "Start chat" button is disabled and grayed out. I see the button HTML is set to "disabled". This was working in RocketChat v3.0.8 and broke after upgrading to v3.3.0

Steps to reproduce:

1. Go to Administration, then Omnichannel.
2. Click on the Livechat heading.
3. Scroll down to enable the setting "Allow Visitor to Switch Departments"
4. Be a livechat/omnichannel visitor and start a new chat message.
5. While still a chat guest, click "Options" in the lower left corner.
6. Click "Change Department"
7. Select a department from the drop-down menu.
8. Attempt to click "Chat now" button and observe it cannot be clicked.

Expected behavior:

"Chat now" button should be clickable. The HTML for the button should not be set to disabled.

Server Setup Information:

• Version of Rocket.Chat Server:
• Operating System: ubuntu 18.04.4
• Deployment Method: manual
• Number of Running Instances: 1
• DB Replicaset Oplog:
• NodeJS Version: 12.16.1
• MongoDB Version: 4.0.12

Client Setup Information

Webapp.
Latest Google Chrome (Version 83.0.4103.61)

Relevant logs:

No relevant server logs when going to Administration -> View Logs

No relevant browser logs in inspect element.

[renatobecker]

We already have a pull request that will fix this issue.

Thanks.

[johnypeterson]

This should be reopened. The problem still exists

[mrmookie]

Same issue here on latest SNAP