[OJS] searching in "My Queue" dashboard tab doesn't work for author names

Describe the issue or problem
For our OJS 3.4.0-5 journal, editors have reported that searching submissions on the “My Queue” tab in the editor’s dashboard doesn’t work fully. Searches for title words do work, but searching on author name produces no results.

OTOH, searching for author names does work on all other dashboard tabs.

Steps I took leading up to the issue

  1. Go to ‘dashboard’ → ‘My Queue’
  2. Enter a submission author name in the ‘Search’ input field, and click the search icon or wait for autocomplete results
  3. See how no results are being returned

What application are you using?
OJS 3.4.0-5

Additional information
Searching on the “My Queue” tab produces following URL and no search results: https://my.journal/index.php/journal/api/v1/_submissions?status=1&assignedTo[]=122&searchPhrase=kurz&count=30&offset=0&_=1711448615405

Searching for the same author on the “Active” tab produces following URL and search results: https://my.journal/index.php/journal/api/v1/_submissions?status=1&searchPhrase=kurz&count=30&offset=0&_=1711448615404

For some reaon, the assignedTo[]=122 URL parameter prevents searches on author names to succeed, even though it does work when searching for title keywords.