Return type from string functions doesn't get infered correctly.

[NightrainsRbx]

When calling a function from the string library or a method from a string which returns string, the variable seems to infer the type, but the type infered doens't work.

For example:

I also tested the io library and file type and they do work, custom classes works too.

Adding ---@type string to variable seems to work better but after calling a function on the infered types it stops working:

I also tried adding ---@type string* and it works just like the string literal and the library.

Environment:

OS: Windows
Client: VSCode
I'm using the latest version of lua language server (1.15.1).