When resizing Windows Explorer on Windows 8 it crashes?

My guess is that is related your video drivers/adapter. Start by upgrading the drivers for that to Windows 8 compatible drivers. Check to see if it happens in safe mode, that will more than likely tell you if it is a driver, as safe mode loads a generic driver.

Try both the WDM driver and the official driver from the manufacturer of the video card.

I recently faced this issue on Windows 10. There is a very simple solution after all :)

Check if you have enabled extra panes like the preview or navigation pane in explorer. Simply reset your views to the usual Large Icons, Small Icons, Details etc and DO NOT select any navigation/PREVIEW pane.

Once I disabled the preview pane, the explorer window could resize to the smallest size and stop flickering!