Text is disappearing shortly after being added

For some reasons I could only reproduce it in the App Store build and not in the dev build. In the App Store build I can reproduce it quite often.

To reproduce follow the steps in this video: https://cloudup.com/ceE2VX9vNBf

The link disappears shortly after I paste it and it can't be found in the history of the note.

### Expected
All entered text should stay

### Observed
Text is gone

### Reproduced
For the steps please check the video: https://cloudup.com/ceE2VX9vNBf

1. Create new note
2. Enter title
3. Pin a note
4. Paste some text into the note

Make|Model|macOS Version|App Version
-|-|-|-
Apple|MBP|Catalina|2.4

Start by following the linked video and reproducing the issue in the App Store build, then compare the same note-editing steps with the dev build. Investigate why pasted text disappears after pinning a note and verify that entered text remains available in the note history after the fix.

Written by the indexing model from the issue text.