Debian: Flatpak applications won't launch at all. What to do?

Question

linux

Hi all! In general, I wanted to install the Flatpak application and ran into such a problem that all the installed programs I get this picture

[email protected]:~$ flatpak run de.haeckerfelix.Shortwave
bwrap: Can't mount proc on /newroot/proc: Device or resource busy
ошибка: Ошибка ldconfig, статус ошибки 256
[email protected]:~$

How to fix this bug? (Debian Testing (bullseye) arm64)