Robotframework: when fill in description then text is not displayed into the FB group post

Can someone help me with the problem that text is not displayed after was filled into Description section to a FB group post.

Thanks in advance.

Screenshot of the form where to fill the text: Imgur: The magic of the Internet

That’s my code in Robotframework:

Click on description
    Click Element   css=div._1mf._1mj
    Sleep   1

Fill on description
    Press Key   xpath=//div[@class="_1mf _1mj"]   \\65
    Sleep   1
    Press Key   xpath=//div[@class="_1mf _1mj"]   \\13
    Sleep   1
    Press Key   xpath=//div[@class="_1mf _1mj"]   \\66
    Sleep   1
    Press Key   xpath=//div[@class="_1mf _1mj"]   \\13
    Sleep   1
    Input Text    xpath=//div[@class="_1mf _1mj"]   ${URL-1}

That is Description code from the FB page:

<div class="_5rpb">
  <div style="outline: medium none; white-space: pre-wrap; word-wrap: break-word;" spellcheck="true" role="combobox" class="_5rpu" aria-owns="js_cv" aria-haspopup="false" aria-expanded="false" aria-describedby="placeholder-dsa47" aria-autocomplete="list" contenteditable="true">
    <div data-contents="true"><div data-offset-key="b59el-0-0" data-editor="dsa47" data-block="true" class="">
  <div class="_1mf _1mj" data-offset-key="b59el-0-0">
    <span data-offset-key="b59el-0-0">
      <br data-text="true">
    </span>
  </div>
</div>