Cannot find channel in search & directory list when using underscores in channel name

[kaiiiiiiiii]

Description:

I cannot find any channel with an underscore in it's name when using the search nor can I find it through the directory list. This only happens when special characters in channel names are allowed.

IMO this happens, because underscores get replaced with dashes?!

Server Setup Information:

• Version of Rocket.Chat Server: 0.63.3
• Operating System: Ubuntu
• Deployment Method(snap/docker/tar/etc): tar
• Number of Running Instances: 4
• DB Replicaset Oplog: yes
• Node Version: 8.9.4
• mongoDB Version: 3.6

Steps to Reproduce:

1. Allow special characters in channel names
2. Create a channel with underscores in its name

Expected behavior:

• Channel name in sidebar with underscores
• Channel name in browser url bar with underscores
• Channel name on channel information page with underscores
• Channel name on edit page with underscores
• Channel name in search with underscores
• Channel name in directory list with underscores

Actual behavior:

• Channel name in sidebar with underscores
• Channel name in browser url bar WITHOUT underscores (replaced with dashes)
• Channel name on channel information page WITHOUT underscores(replaced with dashes)
• Channel name on edit page with underscores
• Channel name in search WITHOUT underscores (replaced with dashes)
• Channel name in directory list WITHOUT underscores (replaced with dashes)

Screenshots: