There is is another example
https://www.html5rocks.com/en/tutorials ... ity/intro/and in cef 87 sample client works only window minimized case, but works fine in chromium, there was bug in chromium but it's solved in version 86.
Cases that doesn't works in cef, but works in chromium:
Another window maximized - expected visibleState hidden / actuall no reaction
Another window full cover browser window (works perfectly with explorer window) - expected visibleState hidden / actuall no reaction