Using WP 5.2, the plugin details popup shows wrong homepage url.
What does the plugin details pop up show you for the GitHub Updater plugin?
I think I see where the issue might be and unfortunately it鈥檚 a bit intermittent. Thanks for bringing this to my attention.
This really wasn't particular to any WP version. I simply used the parsed GitHub Plugin URI instead of the Plugin URL. If a short syntax URI was used this resulted in an incorrect homepage link.
Let me know if this is fixed for you in the develop branch.
Works, at plugin details popup the Plugin Homepage link shows the Github project url.