Unexpected replacement of ", " with "," -- removes the space after the comma in the task headers

Importing tasks from an OP to an Excel spreadsheet and exporting tasks from a spreadsheet to an OP removes the space after the comma in the titles.

Example:
```
New task, part 1 —> New task,part 1
New task, part 2 —> New task,part 2
New task, part 3 —> New task,part 3
```

How to fix this bug?