Here is why I want to disable this behaviour:
1. Before this change, when I hover on the icon of an opened app on taskbar, it shows small preview with an "x". This is very convenient when I just want to close the app. After this change, I have to go through the whole screen to click the "x" on the top right corner of the window.
2. I'm used to click on the app icon to bring it to foreground. I already have muscle memory for this action. However, after this change, The app is brought to foreground quicker than how I click on the icon, resulting in bringing it to background again. Then I have to click again to bring it back to foreground.
3. Some apps lags when I bring it from background to foreground, but I need it to stay in the background to run some time-consuming task. After this update, I often bring it to foreground by mistake and have to wait until this app responds before I can return to my task before. This experience is annoying.