Use touch monitor but problum of Multi-Touch

i use Touch interface which is UE default with Touch Monitor.
At first, it recognized two fingers well, but it suddenly became impossible to handle two virtual joypads at the same time.
I don’t edit project setting>input. Has anyone had the same problem as me and solved it?

I tested it in a new editor window.
Multi-Touch is not work when it started normally, but When I touched the desktop once and entered the new editor window, it recognized more than one of my finger. Hower my finger leave on the touch screen and try again touch input, it is not work.
I’m guessed it only recognizes Multi Touch when it first enters the editor window.
Why is this?

I think I find Solution.

It seems that when you take your finger off the screen, it judges that you have lost focus.
However, it seems that the last key pressed is not erased, so it does not multi-touch and only recognizes a single touch.
I set the ‘Should Flush Pressed keys on Viewport Focus Lost’ option to ‘True’ in the project settings, and immediately after that, I was able to do multi-touch with mind cut.
I hope this is the correct answer and I hope my project doesn’t have the same problem in the future.

If you are still interested, everything was fixed for me by putting the animations after the play a delay.

I solve all my problems.