When I try to use the Chrome Developer Tools, it seems I can no longer view it in a new window.
Is this a bug or was that really an intended change in an update?
You have to click and hold until the other icon shows up, then slide the mouse down to the icon.
Just type ctrl+shift+I in google chrome & you will land in an isolated developer window.
If you need to open the DevTools press ctrl-shift-i.
If the DevTools window is already opened you can use the ctrl-shift-d shortcut; it switches the window into a detached mode.
For example in my case the electron application window (Chrome) is really small.
It's not possible to use any other suggestions except the ctrl-shift-d shortcut
As of Chrome 52, the UI has changed. When the Developer Tools dialog is open, you select the vertical ellipsis and can then choose the docking position:
Select the icon on the left to open the Chrome Developer Tools in a new window:
Click and hold the button next to the close button of the Developer Tool in order to reveal the "Undock into separate window" option.
Note: A "press" is not enough in that state.