In the Battle.net App>World of Warcraft>Patch Notes>Patch Notes Pop-up Window
The link in the upper right section that says: View all patch notes.
This link is broken and clicking on it results in a new web browser window being opened to the WoW search blog results page, with the search prompt window already populated with the prompt of: wow
No results found.
This link URL needs to be updated to be pointing at: /en-us/content-update-notes
and not the current: /en-us/search/blog?k=wow