Description of problem:
On Firefox I was listening to music (Youtube video) but I rewinded the video a few times (to the start) one after the other and the crash notification appeared. 

Version-Release number of selected component:
pipewire-pulseaudio-0.3.21-2.fc33

Additional info:
reporter:       libreport-2.14.0
backtrace_rating: 4
cgroup:         0::/user.slice/user-1000.slice/user/pipewire-pulse.service
cmdline:        /usr/bin/pipewire-pulse
crash_function: flush_items
executable:     /usr/bin/pipewire-pulse
journald_cursor: s=515d9450421e4707a9709f3a43cec070;i=114bc6;b=eaa321cfb9e944a1a08df359248bbe41;m=11441abf7;t=5bba3edde314a;x=7eaaf114acf624c0
kernel:         5.10.14-200.bz1925346.fc33.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 flush_items at ../spa/plugins/support/loop.c:141
 #1 loop_invoke at ../spa/plugins/support/loop.c:211
 #2 impl_send_command at ../src/pipewire/stream.c:418
 #3 impl_node_send_command at ../spa/plugins/audioconvert/audioadapter.c:545
 #4 suspend_node at ../src/pipewire/impl-node.c:368
 #6 pw_impl_node_set_state at ../src/pipewire/impl-node.c:2032
 #7 client_node_removed at ../src/modules/module-client-node/remote-node.c:1098
 #8 pw_proxy_destroy at ../src/pipewire/proxy.c:257
 #9 pw_stream_disconnect at ../src/pipewire/stream.c:1690
 #11 pw_stream_destroy at ../src/pipewire/stream.c:1325