In the browser tests, test.util.sync.getFileList does a CSS query into #detail-table to find all the li elements. However, since we recycle elements, this only fetches the entries currently visible in the viewport and not all the entries. This means that tests checking for certain contents inside the files list will fail if there are entries visible but outside the viewport.

To fix this, either:
* Access the internal state of the table to retrieve the entries; or
* Make the function async instead and scroll the list (using .scrollIndexIntoView) until there are no more entries; or
* Resize the File Manager window until they are all visible (although, this might not be possible, since the tests are running a VM-style window which may have maximum bounds)

In the meantime, a workaround is the reduce the number of entries in a test case to less than ~11 so they are always visible.