CSS dialog is empty after calling at the end of CSS file

1) Create new CSS file.
2) Paste next content:
css{
font-style: oblique;
text-decoration: underline
}

css1{
text-align: center;
font-style: italic
}
3) Set cursor at the end file (last available position of cursor at the end of file).
4) Call CSS dialog
ASSERT: I think that we should see last style class (css1) in CSS dialog
ASSERT FAILED: CSS dialog appears as for empty CSS file.