Out of interest, the forum software detects that the desktop Opera is a mobile and displays as such. It can be changed mind but thought I’d bring it to attention.
did I not post this somewhere after the last update? There’s a custom mobile “theme” that vBulletin kicks yor settings into if you are on a mobile browser. It’s a start, trying to match Tapatalk really in my opinion 
It misses the NewPosts button 
Works fine on my Mac with Opera and Safari 
DT.
I did a fresh install of Opera on linux this morning and was directed to the mobile version (as everything was white themed). Now it sends me to the normal version all the time as I clikced the link saying “full site”.
Reproduced the error today…