Command hangs when using process substitution

[dbarrett]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2
uname output: Linux snorkack 5.15.0-88-generic #98-Ubuntu SMP Mon Oct 2 
15:18:56 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 5.2
Patch Level: 21
Release Status: release

Description:

The following command, when run in bash, should copy the word "foo" to
the X primary selection (by process substitution), output the line
"fxx", and exit:

echo foo | tee >(xclip -i) | tr o x

The command does print "fxx" but then it hangs.

The same command behaves correctly when run in zsh.

Repeat-By:

1. Run the command:  echo foo | tee >(xclip -i) | tr o x
2. The command copies "foo" to the X primary selection, prints "fxx", and then 
hangs.
3. Pressing ctrl-D does not cause the command to exit.
4. Pressing ctrl-C kills the command