Keyboard bug GH-to-Rhino

This issue happened somewhat regularly with Rhino v5, and it seems to be happening with v6 as well.

I have Rhino opened up into a full screen on one of my monitors. I have Grasshopper maximized on the other monitor.

If I am in Grasshopper working away, and then click back into the Rhino viewport to do some Rhino command, I’m usually able to type the command in Rhino using the keyboard and the keystrokes show up in the command prompt window. However, I lose the ability of the Return key to work. Basically, I can type the command but cannot execute it. Similarly, I may lose the function of the Delete key on the keyboard, or perhaps the Esc key. I can go back into Grasshopper and keep working but the keyboard still won’t work if I flip back into Rhino.

Occasionally, I may be able to save and close Grasshopper, then go into Rhino (the only window left on either screen) and the keyboard may work. At other times, even closing Grasshopper will not give me back full control of the keyboard in Rhino.

What’s going on?


I’ve had this as well. I think the last time I searched for this problem on the forums I found the suggestion of disabling and enabling the solver. And I think this has so far always fixed it for me.

I have the same problem
In my case, I run Grasshopper’s new document and go back to before document. then keyboard working again on rhino.
but it is not fundamental solution

1 Like

Hi I face the same problem: while working in GH, suddenly keyboard inputs are sent to Rhino, so for example it is not possible to delete a component in GH using the Delete key.


I can confirm this problem lately. Did anyone get more information what’s going on here?

1 Like

Does anybody find the solution to this problem lately?

1 Like

Also having the sme problem of not being able to use delete key. Just spent a small fortune on a laptop to switch to windows from mac to open up the possibilities of GH and somewhat regretting it. Hope this can get sorted. Thanks