Perf not demangling

I need perf for my work, so i installed package linux-tools with swupd. So far so good as it is working, but as titles says it does not demangle function call names even though c++filt is working. I also used
perf report --demangle --demangle-kernel with no success. Is there any chance how to get this working without building from source?

Can I ask you to file a github issue with reproduction steps?

Ye sure, here