Style don't always apply to selected text in a text document

Desktop editors
1

Hello
I don’t get what are the conditions to apply a style to text.
Here is my doc:
S01 P2.docx (34.7 KB)

Depending on what I select, the style does not always apply:

To me, it is kind of a bug, but I might miss something.

Thanks.

3

Hello @arcqus
Thank you for the file and the video demonstration, we’re checking the situation.