GSC still reporting duplicates after implementing canonicals/redirects

Hello,

I am dealing with a funny situation.

Google Search Console reported some duplicate title tags, in the HTML Improvements sections several months ago.

I implemented 301 redirects and rel canonicals where appropriate to solve the duplicate issue for those pages. This is something I did several weeks ago, but those title tags are still reported as duplicates.

Later, I noticed I left both canonical and duplicate URLs in the sitemap.xml. Could this be the reason Google is still keeping the ULRs in its index? However, I removed the duplicates, keeping only the main, canonical URL in the sitemap.xml.

Could somebody please suggest me a solution for that? Should I manually submit the edited URLs (with redirects or rel canonicals) for crawling in GSC, or is there anything else I can to have those duplicate title tags removed from GSC?

Thank you very much

try the site to download as google or find an indexer and try to index url additionally