There were still some last synchronous ajax requests in dashboard management. Don't think it should be a problem to have them async as those requests shouldn't take long.
Not sure if we should maybe move that to next major version, as it might break UI for some plugins
Awesome to get rid of sync requests finally. Could probably even merge earlier removing all calls to
sync=true and then separate PR to hard coded to no longer use sync? This way we would get rid of sync calls earlier but also fine to wait for everything in Piwik 4.
I presume failing tests are not related to this? http://builds-artifacts.piwik.org/piwik/piwik/nosyncajax/23402/
If tests succeed 👍