Alt Tab switching crashed

Has any one got or have encountered this issue before? Some time when I try to switch to another client since I need to pass items to alt character and then the game crashed back to window when I alt tab again. This problem happens in random, but most of the time alt tabbing works between switching clients. Additionally I tried even with just only one client opened then I was alt tab to browse website, and when I alt tab try to return to the game, the client crashed unexpectedly. I didn't experience these problems before back in those days when I was using Win7, but now I'm on Win10 64 bit with anniversary update and this issue happens quite frequently and randomly. Will there be a patch addressing this bug during the future?

"Update" I'm playing with client version 212 and still experience random alt tab crashed. I think this patch didn't address the bug yet.