[REG 5.15.0 -> 5.15.2] OCSP is used even if not enabled

It looks like with QtWebEngine 5.15.2, OCSP is always used, even if setUseForGlobalCertificateVerification was never called on any profile.

This can be observed by running e.g. Wireshark (or tcpdump, though I haven't tried), filtering for ocsp and running simplebrowser.

Alternatively, drop outgoing HTTP packets entirely with something like sudo iptables -A OUTPUT -p tcp --dport 80 -j DROP and you will see HTTPS connections failing.