Or... you can just make a cube at an angle, so you don't need the tractor beam to make it press the button. :/

Cool chamber! I did not realize what the glitch was at first. Worked well for me though.

Sye
their are at least 2 other glitches with funels.
1 I have only done by accident, quite a few times.
where you go to the top of the funel.
& when exiting the funel, you end up floating.
but gravity does not kick in.
you just keep floating.
the other someone did on one of my maps.
where he went away from a polarity funel emitter, while in the funel ?
he posted a video to prove it.
I could not repeat it.

Sye
nice glitch.
learn't something new :)
strange thing is, I did not realise the exit chamber panel, was connected to the button.
so I took a cube into the exit chamber & put on the exit button.
but when I tried to repeat this, with the 3rd cube.
I realised the panel was connected to the button & could not get in there.
I must have done the glitch, without realising it.
& could not repreat it.
I got the cube to the left of the exit, by stacking the other 2.
wich ment no portals needed, to get the other 3rd cube.
but after taking a cube to the exit button, which I must have used the glitch.
but did not realise it.
I was unable to get the other cube past the panel, to the exit.
needed video in the end.
thumbs up, again.

So I am sure I did not used this bug.
I maded like this: ONE cube can press the button in the begining if you put it right. Them justo pick the other 2 to open the door.

Video Solution Added!

This is my newest map and the least tested. I think you can get around the bug. Here is the glitch: Interestingly, when you exit a trackor beam you just slip out and fall to the ground. Now, if you exit right before entering a portal then you float for much longer that you are meant to. So if you float longer before gravity takes over then you can float over the fizzlers below and get to the blocks. Let me know how you did it, maybe I need to edit the map.

I don't know if I solved this right. I did not find a bug. Except that I managed to use one cube in the button and worked, then i just used the 2 ones. Was this the way intended? to show that is possible?