phpDocumentor: Phar doesn't work after 3.3.1

Running the phpDocumentor phar worked fine for me up to 3.3.1 but it stopped working for 3.4.0. This cropped up initially in a gitlab pipeline, it had worked fine on Aug 15 but it stopped working Aug 16. Nothing in the pipeline environment changed between runs. I was also able to replicate the issue on my personal machine.

Expected behavior

Running the phpDocumentor phar file should work.

$ curl -L https://github.com/phpDocumentor/phpDocumentor/releases/download/v3.3.1/phpDocumentor.phar > phpdoc
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 22.0M  100 22.0M    0     0  19.2M      0  0:00:01  0:00:01 --:--:-- 23.8M
$ chmod +x phpdoc
$ ./phpdoc
phpDocumentor v3.3.1

Parsing files
 129/129 [============================] 100%
Applying transformations (can take a while)
 4/4 [============================] 100%
All done in 1 seconds!

Actual behavior

The phpDocumentor phar complains about Failed to open stream: phar error: no directory in "phar:///[redacted]/phpdoc/bin/phpdoc"

$ curl -L https://github.com/phpDocumentor/phpDocumentor/releases/download/v3.4.0/phpDocumentor.phar > phpdoc
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 14.4M  100 14.4M    0     0  9093k      0  0:00:01  0:00:01 --:--:-- 13.5M
$ chmod +x phpdoc
$ ./phpdoc
PHP Warning:  require(phar:///[redacted]/phpdoc/bin/phpdoc): Failed to open stream: phar error: no directory in "phar:///[redacted]/phpdoc/bin/phpdoc", must have at least phar:///[redacted]/phpdoc/bin/phpdoc/ for root directory (always use full p
ath to a new phar) in /[redacted]/phpdoc on line 10
PHP Fatal error:  Uncaught Error: Failed opening required 'phar:///[redacted]/phpdoc/bin/phpdoc' (include_path='.:') in [redacted]/phpdoc:10
Stack trace:
#0 {main}
  thrown in /[redacted]/phpdoc on line 10

Steps to reproduce the problem

1. Download phar
2. Set executable flag
3. Run the phar file

Your environment

• Version used: 3.4.0
• Install method: phar
• PHP version: 8.2.9 and 8.1.14
• Operating system and version: Arch Linux and Ubuntu 20.04.5 LTS