Upstream task: https://secure.phabricator.com/T8285
Compare what I think should be the same query:
Phab (it displays a button to go to page 2, except page 2 is empty, so it only shows the first 100 results)
Maniphest (174 results).
See also this query where the interface wrongly suggests there's a 4th page to read.
If we can have a couple of queries showing the problem at https://secure.phabricator.com, the report upstream will be more chances of receiving attention.
I have changed the title of the task because the problem here is about Phabricator's advanced search and pagination. It happens sometimes, not always, and I haven't found a pattern.
If you find more buggy examples, please share them.
I think the issue is that the pagination is just an estimate. For instance, sometimes you ask 200 results and you only get 180. The existence of a [2] button doesn't mean there are actually more results.