I have also had a site which was purely client side React fail to index properly - some pages were not picked up, others were indexed weirdly (some of the page

I have also had a site which was purely client side React fail to index properly - some pages were not picked up, others were indexed weirdly (some of the page content ended up in the title on google somehow!). Migrated the site to use react-static (which was not too painful a migration) and all good now! This was before the change google announced to using the latest Chromium for Googlebot so I’m not sure if that would have solved the issue.