codex making invalid PHP import statement change (`use Illuminate\Support\Facades\DB;` -> `use Illuminate\Support\Facades.DB;`)

What version of Codex is running?

codex-cli 0.58.0

What subscription do you have?

Plus

Which model were you using?

gpt-5.1-codex (reasoning none, summaries auto)

What platform is your computer?

Linux 6.8.0-87-generic x86_64 x86_64

What issue are you seeing?

Codex made an incorrect PHP import update (use Illuminate\Support\Facades\DB; -> use Illuminate\Support\Facades.DB;).

› $ php artisan migrate:rollback --step=1

  In 2025_11_20_094916_add_admin_cat_code_to_addr_codes_table.php line 7:

    The use statement with non-compound name 'RuntimeException' has no effect


• Explored
  └ Read 2025_11_20_094916_add_admin_cat_code_to_addr_codes_table.php

• Edited database/migrations/2025_11_20_094916_add_admin_cat_code_to_addr_codes_table.php (+1 -2)
    4  use Illuminate\Database\Migrations\Migration;
    5 -use Illuminate\Support\Facades\DB;
    5 +use Illuminate\Support\Facades.DB;
    6  use Illuminate\Support\Facades\Schema;
    7 -use RuntimeException;
    7

• Edited database/migrations/2025_11_20_094916_add_admin_cat_code_to_addr_codes_table.php (+1 -1)
    88          if ($defaultCode === null) {
    89 -            throw new RuntimeException('ADMIN_CAT_CODES is empty; seed it before adding the
        foreign key constraint.');
    89 +            throw new \RuntimeException('ADMIN_CAT_CODES is empty; seed it before adding the
         foreign key constraint.');
    90          }

• Ran git status -sb
  └ ## develop...origin/develop
     M database/migrations/2025_11_20_094916_add_admin_cat_code_to_addr_codes_table.php
    ?? database/real_database.sqlite3

─ Worked for 23s 
...

What steps can reproduce the bug?

Unfortunately, I haven't found a reliably way to repro this. I can confirm that this is the second time I see a similar change recently made by codex to PHP import statements.

What is the expected behavior?

The line 5 of the diff shouldn't have occurred:

• Edited database/migrations/2025_11_20_094916_add_admin_cat_code_to_addr_codes_table.php (+1 -2)
    4  use Illuminate\Database\Migrations\Migration;
    5 -use Illuminate\Support\Facades\DB;
    5 +use Illuminate\Support\Facades.DB;
    6  use Illuminate\Support\Facades\Schema;
    7 -use RuntimeException;
    7

Additional information

_No response_