Could not select Option from Dropdown Menu

Hi,

When I select “Classes” and “Attendance”, there are few options from the dropdown menu. However, when I hover my cursor over the options, it doesn’t lead to the correct link. Instead, it link to the next option. For example, when I click on “Classes”, it shows few options like “Classes”, “Subjects”, etc. But when I try to click on “Subjects”, it will lead me to the attendance page (which is the option next to “Classes”)

Kindly advise. Thank you