I have the same issue as OP here. Any solution yet?
My prerequisites - version of Opera in use: 32.0 for Windows 10 on the PC platform | Screen: Resolution 3200x1800 / ColorDepth 24 | Browser JavaScript: Opera OPRDesktop 28.0 core 1750.0, August 6, 2015. Active patches: 20
I use a Samsung 13.3" Ultrabook.
/Suomela