Item regex not working

[pef-toollive]

Describe the bug
I cannot use regular expression in item field to add multiple items data in graph : when I input the regex and validate with Enter, it only disappears (field is emptied) and nothing happens.

Expected behavior
Any kind of regex with syntax : /User.*/

Screenshots
See below : I would like to add all "User/.*" tags

Software versions

Grafana	Zabbix	Grafana-Zabbix Plugin
9.2.5	6.4	4.3.1