The hintbox opens under the main menu when the Edit Widget pop-up is moved over it.

Steps to reproduce:
1. Open dashboards and create a new widget (Geomap);
2. Move the Edit Widget pop-up over the main menu;
3. Press on the icon near "Initial view".

Result:
The hintbox opens under the main menu.

Expected:
The hintbox should be fully visible.

Master branch will be fixed in https://support.zabbix.com/browse/ZBXNEXT-4769