Rename pattern not work under Big Sur

I am using the latest version of Hazel 4 and just updated to Big Sur and find the rename pattern not work. To be specific, the existing rules of renaming works but when you click into the rule, the rename patterns turned into something like "......." (lots of dots) and you can no longer choose from the pattern for rename. Wonder if you will fix this or we need to upgrade to version 5, thanks.