Its very simple to deal with this problem with several tricks. These tricks only for Windows OS.
Firstly, create opera.exe shortcut in desktop. You can easily find it in installation folder. Then right click your opera.exe shortcut and go to properties. In shortcut tab change the target location by adding --no-sandbox (for example: "C:\Program Files\Opera\38.0.2220.29\opera.exe" --no-sandbox). This could be worked in some devices or certain windows OS.
If the problem persists then you need to go to properties again and run the compatibility mode to any windows version.
Changing the compatibility mode is worked for me. 🆙
