Previously, the layout of tables in Jira issues was identical regardless of whether you're viewing or editing the issue: tables always spanned the full width of the page. However, as of today, tables included within issues across all of our company's projects appear centered without spanning the full page width when viewing the issue. When editing an issue, tables continue to span the full width of the page as in the previous behavior.
Viewing an issue:

Editing an issue:

This is an ugly and unwanted change. Is there any way to revert to the previous behavior?