Hey!
I had a very similar problem where my application crashed when I tried to delete the interceptor (see https://stackoverflow.com/questions/59631239/qwebengine-deleting-qwebengineurlrequestinterceptor-results-in-crash)
I did not have multiple webviews but multiple webpages, where I always created a new interceptor. It was sufficient to only use one interceptor.
Hope this helps!
↧