No flag tweaks used.
Op26 got more stable after closing all tabs with german news sites m.focus.de m.spiegel.de and m.stern.de! No https. may be scipting?
Got a crash today with v27 trying the introduction item in the settings. But it worked afterwards. very strange...

Opera for Android exits freqeuently since the update especially when using the tabs button or at least when swiping through the tabs which number >60 which was no problem before on the Galaxy Note3. Is this on the list for v27?