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  1. ZABBIX BUGS AND ISSUES
  2. ZBX-27143

Widget form data not saved correctly when too many inputs are submitted

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    • Sprint candidates
    • 3

      Steps to reproduce:

      1. Start creating a new Scatter plot or Graph widget.
      2. In the 1st data set, select all hosts (in this case, 4 copies of Zabbix server) and choose items for both X and Y axes.
      3. Clone the 1st data set 4-6 times.
      4. Save your widget configuration form.
      5. Observe your widget.
      6. Click the Edit button on your widget.

      Result: 

      An error notification appears:

      Invalid parameter "Data set/4/y_axis_items": cannot be empty.

      PHP error logs:

      $ tail -f /var/log/apache2/error.log
      [Fri Oct 24 04:29:51.877821 2025] [php:warn] [pid 908] [client 192.168.120.28:53694] PHP Warning:  PHP Request Startup: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0, referer: http://dp-virtualbox/ZBXNEXT-9424-7.3/zabbix.php?action=dashboard.view&dashboardid=1&from=now-1h&to=now
      [Fri Oct 24 04:30:18.404850 2025] [php:warn] [pid 5623] [client 192.168.120.28:50389] PHP Warning:  PHP Request Startup: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0, referer: http://dp-virtualbox/ZBXNEXT-9424-7.3/zabbix.php?action=dashboard.view&dashboardid=1&from=now-1h&to=now
      

      Expected: The user should receive a warning about the limit being reached before saving the widget configuration form. An error message should appear if the limit is reached when form data is being submitted.

            dfofanovs Dmitrijs Fofanovs
            dponomarenko Deniss Ponomarenko
            Team A
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              Created:
              Updated: