In Waveguide tutorial higher modes have decaying fields

[marcberthoud]

I've been following the tutorial at

and only have a signal going through the waveguide in one mode. For higher modes the field is only visible at the input and quickly decaying. See screenshot below for the error. For the second mode, I should see what's in Ansys' youtube video on the left but what I see is what's on the right. What needs to be done differently in the simulation? Please update the video such that this error doesn't happen anymore. Upload in this dialog doesn't work (I get the error "Invalid: JSON 0" - please ask Ansys to fix the broken website). The image is available on this external link:

Just to clarify: I don't object to the different rendering of the fields, the problem I have is that the result is different. I'm using Ansys AEDT 2025 R1. Please tell me how to change the simulation that the higher order modes are correctly simulated.