Graph Inputs in MetaSound do not work


I am coming from a creative coding background and starting to get into UE5 mainly due to MetaSound.
However, if I select Graph inputs, the input fields are not shown in the inspector, so they become unuseable.
This only happens if I use the UE5 engine installed via the epic game launcher. If I use the UE5 version I compiled myself from the sourcecode without the epic games launcher, the graph inputs work as expected, however the self-compiled version runs worse and crashes often.
I should also note that the epic games launcher crashes every time after UE5 is launched.

My system is macOS Big Sur 11.6.1 on an Intel MacBook.