Steps to reproduce:
- from the main wiki, create a username
- create a Subwiki called "Workspace Request Join" and set it to "Only an admin is allowed to invite users"
- invite the user you created earlier
- login to the user, and accept the invitation
- go to main wiki on Main.WebHome.
- you will see that the message written generate a horizontal scrollbar
The problem is with the following CSS rule in Main.Activity :