Why does successmessage (formit) duplicate code on the site?

Question

MODX

Friends, I don’t understand what happened to formit. The code is the following:

[[!FormIt?
   &hooks=`spam,email`
   &emailTpl=`MyEmailChunk`
   &emailTo=`[email protected]`
   &emailFrom=`[email protected]` 
   &emailSubject=`New request from devaround.ru`
   &successMessage=`Сообщение успешно отправлено`
   &validate=`name:required, 
      email:email:required,
      text:required:stripTags`
&name.vTextRequired=`Введите, пожалуйста, Ваше имя.` 
&email.vTextRequired=`Введите, пожалуйста, Ваш email.` 
&text.vTextRequired=`Введите, пожалуйста, сообщение.` 
  
]]

On the site, after sending [[!+fi.successMessage]] displays the following text:

`Message sent successfully` &validate=`name:required,

Reinstalled the component, nothing helps. Modx 2.5.2.
What could be the reason?