Nil access check does not run

How are you using the lua-language-server?

Other

Which OS are you using?

Linux

What is the issue affecting?

Diagnostics/Syntax Checking

Expected Behaviour

I have the minimal example

---@class A
---@field b fun(self: A): table?

---@return A[]
local function get_A()
  local l = {}
  for _ = 1, 10 do
    if math.random() > 0.5 then
      table.insert(l, { b = function(self) return { f = 4 } end })
    else
      table.insert(l, { b = function(self) print("hi" .. tostring(self)) end })
    end
  end
  return l
end

local as = get_A()
for i = 1, 10 do
  local a = as[i]
  if a:b().f > 3 then
    print("yo")
  end
end

The lsp should give me an error about a:b().f as a:b() could be nil.

Actual Behaviour

No warnings are shown.

Reproduction steps

1. Copy the given code into an editor
2. See that no errors are shown

Additional Notes

No response

Log File

No response

首先，在使用 lua-language-server 的编辑器中运行最小 Lua 示例，并确认没有针对 a:b().f 发出诊断。跟踪链式调用和 nullable 返回值的诊断/语法检查路径。完成标准是：示例报告对 a:b() 进行解引用可能访问 nil 值，且不引入无关警告。