Invalid in autocomplete

[ghost]

Environment（环境）

name	version
IDEA version	2019.2.4
EmmyLua version	1.3.3.150-IDEA182
OS	Windows 10

What are the steps to reproduce this issue?（重现步骤？）

1. Create a simple lua file

2. Paste the content on it:

   function Timer()
   local timer = {};
   
   function timer:Start()
   end
   
   function timer:Stop()
   end
   
   function timer:IsRunning()
       self:|
   end
   
   return timer;
   end

3. Start typing for autocomplete on 'IsRunning' after self:St

What happens?（出现什么问题？）

Good autocomplete suggestions, after typing the second character 't' after 'S' all gets Invalid.

What were you expecting to happen?（期望？）

The suggestions to remain good as before.

Any logs, error output, etc?（有没有什么log, error输出？）

(If it’s long, please paste to https://ghostbin.com/ and insert the link here.)

Any other comments?（其它说明）

[CppCXY]

update to lastest

[ghost]

I don't see to have other update for this version of IntelliJ.

[CppCXY]

You need to upgrade intellij idea first

[ghost]

I can't update to newer because I found this version to work best for my. Compared to bugs that broken things that was working good before. So I stick to this for now. Not sure if this is the ide issue or the plugin.