Activity history not showing diff for description change when a checkbox was checked/unchecked

Summary

When a checkbox is checked/unchecked in Markdown while changing an issue description, activity stream shows a 'checkbox was checked' message rather than 'description was changed' message and therefore it is not possible to see the diff for this change. Because of this behavior, users might miss possibly important important changes made in issue descriptions.

Steps to reproduce

Open an issue. Input a paragraph of text and a checkbox to its description. Change the paragraph of text as well as the checkbox in markdown.

What is the current bug behavior?

Description change is displayed in the activity stream as checkbox check, without possibility to look up diff.

What is the expected correct behavior?

Description change should be displayed in the activity stream as a description change with a diff.

Relevant logs and/or screenshots

Screen_Recording_2020-06-04_at_23.19.00

Possible fixes

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