The whole story you may find here: https://forums.macrumors.com/thread...pdfs-in-preview-and-broken-quicklook.2073401/
I registered a bug at Apple's Bug Reporter and it turned out they aware of the issue. Let's hope the fix will be delivered quickly.
I registered a bug at Apple's Bug Reporter and it turned out they aware of the issue. Let's hope the fix will be delivered quickly.