Different type of hover on buttons

[PKulkoRaccoonGang]

STR:

1. Create a post
2. Create a response in this post
3. Hover on the response (will see the additional menu with add a comment, like, etc.)
4. Hover "Add comment"
5. Hover "like"
6. Observe the result

[ayesha-waris]

@PKulkoRaccoonGang the difference is due to theme, if you setup edx theme, it will be resolved
PS, attaching screenshots from stage