Strange text in login panel

[Knitter]

Using a stable version is always recommended. The current beta version is available for testing only and can easily contain bugs that will break any site using it.

So yes, I would recommend that you use the stable version until the next version comes out. I can't speak for the dev team but I think the next version won't take long to be released.

There are a few improvements and bug fixes but I believe it's better to wait until the final version is out instead of using a beta version, unless you intend to test the beta and can fix any issue.