QQ can't find female video netizens?

These days, I found that QQ didn't work properly. At first, I thought it was the version issue. Then, I downloaded a few other versions of QQ from the Internet and found the same problem occurred. Now, it's known that the affected versions include QQ2006 beta3 and beta2. Below are some partial screenshots.

After setting the search conditions and clicking "Find", the following situation occurs:

PS: Testing platform: Windows XP, ISP: China Unicom and Jinan Broadcasting, QQ version: QQ2006 beta3. Strangely, it's possible to find male video users but not female video users.