Selecting multiple cells as a code snippet

[jahn96]

Describe the bug
Saving multiple cells as a code snippet does not save the code at all.

To Reproduce
Steps to reproduce the behavior:

1. Select multiple cells in notebook
2. Save them as a code snippet
3. Hover over the snippet
4. See empty preview

Expected behavior
Preview should have a code from the selected cells.

Desktop (please complete the following information):

• OS: iOS
• Browser chrome, safari