1. Go to about:preferences#containers 2. Click the [Add New Container] button. 3. Add a super long (256+/- char) container name. 4. Click the [Done] button. 5. Go to "File" > "New Container Tab" in the main menu and notice the name doesn't truncate. 6. Go back to about:preferences#containers and edit the preferences for the container. ### Actual results (a) Container names aren't truncated on "File" > "New Container Tab" (b) Container names aren't truncated when editing container name (but titles do get wrapped if you resize that popup window when editing title). It looks like the titles are properly truncated in a lot of other places.