Unable to recognize jagged array declaration

I'm using version 2.7.0

It looks like plugin is unable to recognize jagged array declaration:

```
[int[][]]$Test=@([int[]]::New(3),[int[]]::New(4))
Write-Host $Test[0]
```

Script is successfully executed, but in IDE it is highlighting first bracket in [int[][]], and in Problems tabs it is showing:
 '[' unexpected