I have also just built a PC using just the 2400g for graphics and I am having the same problem, but it also sometimes extends to my desktop colors after tabbing out.
Someone using NVIDIA graphics had a similar issue which was solved as follows:
"Open up NVIDIA Control Panel, go to Change Resolution, scroll down and check Use NVIDIA-Color Settings. I don't exactly know how it's called since mine is in a different language, but that should fix it."
I have looked in the Radeon control panel for similar settings but haven't found anything yet.
Definitely an annoying problem.
2 of 2 people found this helpful
Is really a boring bug, apparently has connection to the last update of Windows 10,
sometimes the problem is solved by putting in window mode, almost always works
Try disable the full screen optimization of windows 10, this can solve. There is a program
that does this, but I have not fully tested.
Many people are with the same problem, in reddit some have said that installing an
older version of windows 10 solved.
I hope this helps, good luck.
1 of 1 people found this helpful
Thank you so much, this did it for me. I disable full screen optimization and everything was normal again.
You can install the new driver available here : Radeon Software Adrenalin Edition Q2 2018 Release Notes
Note : It is essential that you reboot the system after you install these drivers.
Please submit your feedback on any issues with this driver here.
Probably not a problem in the driver, the problem is in Windows 10, I always use the updated
drivers and even then, the bug continued, this bug came up with a new Windows update.
Simply turn off full-screen optimization.