undefined optional parameter
After upgrading Typedoc to the latest version (this happens on 0.20.6 and up), Typedoc is showing the undefined value also for parameters which are already marked as optional with ?. This makes the parameters section much more clustered and difficult to read:

I would like an option to disable this behaviour, and make it look like it was originally (this is version 0.20.1):

This is behaving as expected for parameters but not for properties (note how options doesn't have a | undefined)
Fixed in 0.20.30