Hello,
I migrated from LimeSurvey version 6.10.17 to the latest version, 7.9.1. I have encountered a troublesome bug—one that I was unable to reproduce on the LimeSurvey demo instance.
However, I was able to reproduce it using a fresh installation on my development server.

The error occurs in version 7.0.5 and later.

Environment:
RockyLinux
Apache 2.4.X
PHP 8.4.27
PostgreSQL 17.9
RewriteEngine On

Contents of the config.php file: (actual address modified)
// Enforce a certain URL base
'request' => array(
'hostInfo' => 'https://limesurveyV7-dev.org'
),

'urlManager' => array(
'urlFormat' => 'path',
'rules' => array(
// You can add your own rules here
),
'showScriptName' => true,
),

The access URL appears in the browser for a few seconds, then is replaced by a "short URL" (as described in the manual here: https://manual.limesurvey.org/General_FAQ#How_can_I_remove_index.php_from_the_URL_path_to_get_a_shorter_URL).

However, I haven't actually configured a short URL (if I set that option to 'False', everything stops working, except for the homepage).

The same issue occurs if I perform a migration and try to access an existing questionnaire (see the video—I’m attempting to post it here, though I’m not sure if it will go through; I’ll also provide a Google Drive link as a backup, just in case—@Denis?).

It looks somewhat similar to this bug: https://bugs.limesurvey.org/view.php?id=18383