The jump https in Mini Program's webview web page becomes http.

src= added to webview https://www.xxx.com

it is no problem to open Mini Program at first.
but there are jumps in the web page. Such as

a href= "index.php?id=666"

Click the jump inside, Mini Program is the prompt, illegal business domain name http://www.xxx.com

Why
https://www.xxx.com/index.php.

is clearly opened on the web page.

jumping in Mini Program will turn https into http

Aug.17,2021

have you solved it? I have the same problem

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