Artefact in customer mail template

[Dmitry]

Hi all

I create 2 service desk project, but one has strange artefact in mail and mail templates

On two screen you see template main request and template about create request

Right - from project with artefact, left - normal project

I click on restore to default, i clear all field - line exitst everytime only in one project

How delete symbols in red square?

CSS identical

I have JSD 4.20.7