Bug - Question appears in the API but not in Browse on the opendtb website

The question “In base 2, what is 1 + 1?” (Full JSON below) clearly appears in the API request, but it doesn’t appear in the Browse section on the opentdb.com website. I have tried multiple queries and even going through the entire category, it isn’t there.

API request:
https://opentdb.com/api.php?amount=10&category=19&difficulty=medium&type=multiple

{“category”:“Science: Mathematics”,“type”:“multiple”,“difficulty”:“medium”,“question”:“In base 2, what is 1 + 1?”,“correct_answer”:“10”,“incorrect_answers”:[“Two (2)”,“01”,“11”]}

Update: I think it is cause by the incorrect answer being “11” which is interpreted as number but it expects a string. I had this exact problem when playing with the API.