Problems with MXF

I record Videos with an Canon C300, which records the video in a mxf file. One mpeg video stream and 2 pcm audio streams.
In the clip-monitor I see green stripes.
In the Project I can use only one audio stream at a time, when I use both I get sissling noise like this and with only one audio stream I get that.

any ideas?

thanks in advance

kdenlive 23.08.0
debian trixie/sid