Page has multiple full width columns and one full width column with right side bar at top of page. After making edits to the page and clicking publish, some of the full width columns change to two even columns.

When going back into edit mode, those columns showing as two even columns in publish mode are showing as full width columns (like they should). From here, I go back to publish mode and still get the same error - some full width columns showing as two even columns.

Resolve for me was to revert to a page version that was showing correctly and adding in my edits that I needed. However, after creating a couple more page versions, the same above error happened.

Workaround

Converting the page to the new editor experience solves the issue (if the page is compatible with the conversion). If you have any questions about it, please, reach out to Atlassian Support.