Google has announced it has fixed 99.9% of the canonical issues impacting how websites were indexed.
Google confirmed three weeks ago that it was dealing with indexing issues that were affecting mobile pages and canonicalization. The issues could result in pages not being indexed, or the wrong URL being associated with a given page.
According to Google, the issues are 99.9% fixed, with outlier cases expected to be fixed in the next week or two.
Final update: the canonical issue was effectively resolved last Wednesday, with about 99% of the URLs restored. We expect the remaining edge cases will be restored within a week or two.— Google SearchLiaison (@searchliaison) October 19, 2020