UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Steps to reproduce the problem:
I am using a laptop plugged to an external display.
The display on the laptop has a 60%~70% sRGB gamut, the external display 100%.

But I guess the issue is similar on any setup with multiple monitors.

Both screens are calibrated.

What is the expected behavior?
Ideally, I am expecting that if I drag a window from one screen to the other, the corresponding ICC profile would be applied.

What went wrong?
The browser is using the _ICC_PROFILE of the primary display (the laptop one), and the colors look very wrong when the window is dragged to the external monitor.

Did this work before? No 

Chrome version: 69.0.3497.100  Channel: n/a
OS Version: 
Flash Version: 

It seems that _ICC_PROFILE_n atoms are used for additional displays, but it is not well documented and/or supported by the different desktop environments.

There is also colord, which is well supported by Gnome and also KDE Plasma (with colord-kde).

Another solution would be to disable the color profile once the window is dragged to a non primary screen.

Right now, I can only use one screen at a time, or use the better screen as primary. I can also force the profile to sRGB.