Hi Flon, sorry I just saw this. I am glad you figured it out.
For Lyra in particular I also recommend enabling the geometry visualization flags for Complex and Query Only geometry
We are remaking that menu and other parts of the UI to make it easier to navigate, have saving support and lastly, have better defaults settings that work out of the box in projects like Lyra, but that will come in the next version of UE.
Meanwhile I will add a callout for this case in the Chaos Visual Debugger User Guide .
That user guide also has a list of known issues at the end of the page.
Thank you for mentioning what was the problem and how you made it work.