Syntax highlight returns to 'Text' mode

[ortichon]

Syntax highlight breaks after changing code

BUG

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How to recreate:

1. Start kibibit demo

2. Paste the following code (or any other code):

   function test() {
       console.log('test test');
   }

3. Change syntax mode to 'Javascript' using the status-bar selector

4. Type any character in the code-editor

5. See the syntax highlight return to 'Text' mode