When viewing details for a project there is a difference when using URL's... basically /view/123 and /tag/project show open vs all task defaults. Upstream cannot reproduce.
https://phabricator.wikimedia.org/project/view/37/ vs. https://phabricator.wikimedia.org/tag/mediawiki-core-team/
These two views should be the same but the first is "open" tasks and the second is "all" tasks.
This seems hardcoded in the upstream:
$query_key = $request->getURIData('queryKey');
if (!$query_key) {
$query_key = 'open';
}@mmodell's and my best guess is the Sprint app is doing something funny.