When using GitHub in the browser and then switching to GitHub app (as suggested in the top of the page “Open in GiHub” button, the app opens but fails to do so in the same article/page/link/repo you are browsing. It opens in my GitHub profile section, so I have to go back to the browser, copy the link and then open the app and look for the link/repo manually. Pretty annoying.
I am logged-in in the browser. I am using iPhone X max. App is up to date. Browser: Safari and/or Chrome (up to date).