Keystrokes Playing Out on Both Computers

When cut and pasting between computers using Windows Explorer , I am finding that when using any keystroke on a computer, the other computer mimics it and passes through whatever I am pressing on the first. This was catastrophic when adding, copying, deleting files on the wrong computer. Why is this happening. I am using Windows 11 Pro with version 3.6 build 00105.kvmpro trial, sharing the clipboard. I rebooted both computers and Multiplicity worked fine, but began doing it again. It is sporadic, but keeps happening. Thank you.