Simulated Touchscreen of the new input system problems

I'm encountering several problems with the new input system.

• Buttons sometimes require 2-3 clicks to activate the OnClick() function. (the buttons show that they are pressed)

• When buttons are clickable it activates the OnClick function twice.

• Touch sometimes doesn't end

I've been having this for awhile, and the bugs was also different from another project, is anyone experiencing the same thing or is there a proper setting for this?

Thank you for any kind of help!