The "Blank space" before and after a string is ignored when pasting

[Softvision-MariusComan]

[Affected versions]:

• Firefox Notes 1.8.0dev
• Firefox 55 and up

[Affected Platforms]:

• All Windows
• All Mac
• All Linux

[Prerequisites]:

• Have a Firefox profile with the latest "Firefox Notes" add-on version (1.8.0dev) installed.

[Steps to reproduce]:

1. Open the browser with the profiles from prerequisites.
2. Write a string in the sidebar an press the space key (e.g. "Test ").
3. Select and copy all content from the sidebar.
4. Paste the copied string in the "Notes" sidebar and observe the behavior.

[Expected result]:

• The string from step 2 is pasted (space included).

[Actual result]:

• Space character is not pasted.

[Notes]:

• The issue is also reproducible with the TxP. version of "Firefox Notes"
• If the "Blank space" between two characters is copied and pasted without any issues.
• Attached a screen recording of the issue:
  

[Natim]

This is reproducible in the Quill Playground.
Could you file an issue upstream?

[Softvision-MariusComan]

This issue is no longer reproducible with the latest version of the "Firefox Notes" add-on (2.2.0dev custom build from 01.09.2018) installed.