LSP functionality associated with looking up a function's signature is seemingly cached based on the raw type signature of a function. This affects goto-* on keyword arguments and docstrings for signature_help (notably not docstrings for hovering the function name!).

I'm fairly confident this is specifically a caching bug because the problem never appears in cursor tests, but does appear in an IDE. That is, if you check these queries in a cursor test it works perfectly, but if you try it in an IDE then all functions that share a signature (in a file?) suddenly have conflated info.

def my_func(x, y):
    '''my cool func'''
def my_other_func(x, y):
    '''some other func'''

my_func(x=0, y=1)
my_other_func(x=0, y=1)

https://play.ty.dev/b983c0f4-16cc-45c3-9269-6f96a6165e56