Submenu items disappearing on hover-Spacious

Occasionally in the Spacious theme when you hover over the submenu items,it
disappears,which makes it impossible to click the submenu items.

So,if your are facing the same issue then please paste the following code under
Appearance->Customize->Design->Custom Css and see if it works for you.

.main-navigation a {
  height: auto;
}
.main-navigation ul li ul {
  top: 100%;
}

Note: This may not be the solution to all the users facing this problem.