Does this happen only when alt-tabbing to another application? If you press that same key again ingame doesn't it return to normal?

It happen no matter got alt-tab to other application or not.
There is 1 times I click save then want type for savefile name but it can't even type. (That mean early already got 1 key already act as "pressing" that why I can't type anything in save game's textbox.

The stuck of key can be any key. It can be "FFFFFFFFFFFFFFFFFFFFFFFFF....." non stop. Which the computer can't even accept I press numlock or caplock input which I can see the LED whether can on or off. Then if I press windows icon pop out so that I can restart pc, it keep typing the "FFFFFFFFFFFFFFFFFFF..." in the search textbox beside windows icon.

The only way to stop it is unplug the USB keyboard then replug it back. I don't know why this game can cause it to stuck a press signal in keyboard to system.

My keyboard don't have this problem in other game nor surfing internet so I can confirm it is not my keyboard or USB port problem.

Then sometime when launch the game, it will fail to load at the first time.It show 2 taskbar at bottom then the third is pop out error which is keep refreshing and I cannot press the "X" to close the application. Then only way I can close it go to taskmgr then click the exe of the game then end task.

So these are the 2 problem so far I face in this game.

I will research about these problems.
Thanks for reporting.

Welcome

Updated the game yesterday. Did the launch bug still happens for you?

Today I tried already, so far so good. No launch problem and also keyboard bug.
I will let you know if future facing any other bugs.
Thanks for fast fixed