Sometimes the code is not automatically formated

[GoldenaArcher]

Hi, thank you for all the hard working on this app, and it has been my most important software besides onenote, intellij and eclipse.

Recently I have had some minor issues with the app. If I insert a new section of code, it formats properly and perfectly. However, if I want to format already existed code, it does not seemed to work properly. When I select this section of code block and tried to add some new lines, it will remove other code only leave fixed length of code.

[elvirbrk]

Please provide sample OneNote page where this issue can be reproduced and I'll give it a look.