Hi @g_c,
Welcome to the forum!
Your problem is completely different from the one originally described. This report is about classes; yours is about pseudo-classes/elements, which are different.
Would you please create a new report and add a screencast in which you show and explain what you are doing and what the problem is exactly? Thank you!
Maybe this video will help you, in which Thomas explains the hover states in detail (with an older version, which makes no difference):
