Hello BarbJack,
Thank you for your question.
Basically this is a know situation, it was never considered to be an issue because when using the Multirun it was always recommended not to touch the remote machinesdevices assigned to it until the test ends its execution.
In ZAPTEST v16 and above we’ve included a button which will disable the mouse and keyboard use in the specific assigned machines in the Multirun:
This means once you click this disabling button you still can use mouse+keyboard on your local machine but not in the remote assigned machines in Multirun.
Please contact ZAP for further help.
Thanks,
Sasha