The Feedback Activity is showing a "Preview Questions" button to all roles including students...

That is making the activity confusing for students and that button shouldn´t be shown to students. The issue is reported https://tracker.moodle.org/browse/MDL-63015 / https://tracker.moodle.org/browse/MDL-70586 but no solution yet.
I thought about removing the button under the student rol permissions but there is no capability related to that button.
I am trying to hide the button with CSS in boost (moodle version 4) but the below doesn´t work (i thought the ID needs to be specific to each instance )...
a#action_link63681eff11fa36 {
display: none;
}

If anyone has idea in how to hide the button it would be appreciated.
Thanks,