Preview updates when focus changed

[muuvmuuv]

Expected behavior

Should preview the select file

Actual behavior

Previews the file where I have last edited something (even when I just insert a single space)

Steps to reproduce the problem

1. Open a file to includes another
2. Preview this file
3. Open the included and edit it

Code sample

Please provide a code snippet.

Screenshot / GIF

https://giphy.com/gifs/1o1irl0FE1KYwrd3vS/html5

Specifications

• VS Code version: latest
• MJML extension version: latest
• Operating system and version: macOS 10.14.1

Other information

List any other information that is relevant to your issue.