Pitch Audio Filter

I have used this filter and after that action, I was faced with something like that problem described in this topic. Text filter disappears
I can actually export the video while I still editing the project. But unfortunately, when I opened this project, Shotcut was just automatically crashed and closed.

I also tried to fix it by editing this file and deleting filters, but it doesn’t help.

So my question is - how I can manage to use that filter properly without getting into such trouble? Why is it happening?

Thanks to all, who can help with this.