Fix flickering of system notes
What does this MR do?
EE MR: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1873
- Fix flickering of system notes
- Add original note content to compare against
Are there points in the code the reviewer needs to double check?
- Do we want this in 9.2?
- Note edit updates was added in 9.2, https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10837
Easy reproduction:
- Edit an issue title
- Notice the system note added
- Switch to another tab and back (to fire the polling immediately)
- Notice the flicker (without this fix)
Why was this MR needed?
- System notes flickering after being added
Does this MR meet the acceptance criteria?
- Tests
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All builds are passing
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Conform by the merge request performance guides -
Conform by the style guides -
Branch has no merge conflicts with master
(if it does - rebase it please) -
Squashed related commits together
What are the relevant issue numbers?
Closes #32087 (closed)