ICS file import pannel sometimes appear below parameters pannel

Steps to reproduce

From the agenda web page :

1. click on parameters
2. click on import an agenda
3. select your .ics file

Expected behavior

The importing panel should appear above the parameters pannel.

Actual behavior

Sometimes the import panel appears below the parameters pannel, and clicking on the import pannel (on the far left or right sides) closes both panels.

Calendar app version

6.1.3

CalDAV-clients used

n/a

Browser

Firefox 140.6.0esr (64 bits)

Client operating system

Windows 11, Arch Linux

Server operating system

Debian Trixie (13)

Web server

Apache

Database engine version

MariaDB

PHP engine version

PHP 8.4

Nextcloud version

32.0.3

Updated from an older installed version or fresh install

Updated from an older version

List of activated apps

Nextcloud configuration

{
	"system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "32.0.3.2",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "maintenance": false,
        "maintenance_window_start": 2,
        "theme": "",
        "loglevel": 2,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "mail_smtpauthtype": "LOGIN",
        "mail_smtpauth": 1,
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "default_phone_region": "FR",
        "app_install_overwrite": [
            "cookbook"
        ],
        "trusted_domains": [
            "cloud.exterre.net"
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "overwriteprotocol": "https",
        "overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
        "htaccess.RewriteBase": "\/",
        "default_language": "fr",
        "default_locale": "fr_FR",
        "filelocking.enabled": true,
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0
        },
        "updater.secret": "***REMOVED SENSITIVE VALUE***"
    }
}

Web server error log

n/a

Log file

n/a

Browser log

n/a

Additional info

No response

Start by reproducing the issue from the agenda web page in Firefox 140.6.0esr: open Parameters, choose Import an agenda, and select an .ics file. The work is done when the importing panel consistently appears above the parameters panel and clicking its far-left or far-right edges does not close both panels.