Steps to reproduce:
Enable Bookmarks Bar on Orion.
Right click Add new folder.
Name the folder into something like "lets check those" or "lets use a long one" just for the test.
The folder name should be visible like in Safari!
Orion and macOS:
macOS Monterey 12.0.1
Orion 0.99.108.1-beta (WebKit 613.1.10)
Thank you! 🙂