Unable to open and create new template in Web client

Subject: Unable to open and create new template in Web client

Affected version: 11.4.x

Resolution scheduled for: 11.4.6

Description: When you try to open new template (click plus button "New" --> Message Template), it is shown as grayed empty field

Temporary solution: n/a

Jira Link: https://jira.icewarp.com:8443/browse/WC-5518