### Environment - Editor and Version (VS Code, Atom, Sublime): VSCode, 1.25.0-insiders (Commit: 7dc9539a421c9c33e57e2ce0b718f183bb44c756) - Your primary theme: DefaultDark (issue occurs in all themes) ### Issue Description If a comment string contains `.Role` or `.role`, the word "role" is colored incorrectly. #### Screenshots  ### Expected Behavior `.role`/`.Role` should remain green/the color of the comments. ### Code Samples ```PowerShell # This role works # This .Role doesn't work # This .role doesn't work # $MachineParts.RoleCode ```