No action needed. The code related to the current bug has no ability to affect this metrics. Also, the perfherder metrics show flat in december after the alert while this code is in MC, so it looks like a bad correlation from the tooling.
Bug 1900537 Comment 18 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
No action needed. The code related to the current bug has no ability to affect these metrics. Also, the perfherder metrics show flat in december after the alert while this code is in MC, so it looks like a bad correlation from the tooling.