Missing-Parameter diagnostics catches false positive

[HeeMyung]

Describe the bug
the missing parameter diagnostics catches a false positive warning with non-problem code.

To Reproduce
Please look at the below

I've copied the exact same code for you guys who want to test it self

---@meta
---@class Foo
---@field getChild fun(self:Foo,key:string):Foo

---@class Bar

---@param f Foo
---@return Bar
function toBar(f) end

---@type Foo
local foo = {};

local bar = toBar(foo:getChild('Hello'));

Expected behavior
I don't think this code have any problem but the diagnostics pops an error like this

Screenshots
all the screenshots are included above.

Environment (please complete the following information):

• OS: Windows
• Is WSL remote? what's this?
• Client: VSCode

Additional context

And if I redirect the call with divide the getChild call into a variable like below, It does not raise any error.

Provide logs

[HeeMyung]

@sumneko you are the best! :)