I installed a fresh fedora 25 inside vmware fusion on mac 10.12.4, and installed opera from rpm.
All I get is a black window.
Update: Opera appears if I disable vmware's 3d acceleration, but then things or slower.
Firefox works fine with or without 3d accleration.
Disable opera's 3d acceleration then: settings > enable advanced settings at the bottom (check) > browser > system > use hardware acceleration when available (uncheck).