Scanning problems encountered when authorizing login to Sina Weibo

I encountered such a problem when I was doing authorized login on Sina Weibo
If I manually enter my Sina account password, I can jump to my callback page to get the token and Sina user information.
But when you scan and log in using their QR code, you cannot get the token. Why is this?
Can anyone please give me some advice if you have encountered similar pitfalls? Thanks.

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I encountered such a problem when I was doing authorized login on Sina Weibo
If I manually enter my Sina account password, I can jump to my callback page to get the token and Sina user information.
But when you scan and log in using their QR code, you cannot get the token. Why is this?
Can anyone please give me some advice if you have encountered similar pitfalls? Thanks.