I’ve used Netlify for years. About few weeks (or months?) ago, the button that can directly go to the deploy preview site from GitHub Pull request page has been disappearing.
I’m not sure when this issue started.
I can still access the deploy preview site from the app.netlify.com or using URL, but I want to go the site from GitHub PR page.
All my pull requests have a Netlify (bot) section prior to the checks section which shows the deploy log, and deploy preview links in it (as previously posted.)
If you are not seeing this, you may need to remove the app and re-authorise it.