This looks like a bug. When we run our mouse over an component a pop up should appear.
It works when our mouse enters from the component from the left, right and above (mouse moving downwards). However, if our mouse enters the component from bottom (moving our mouse upwards) it does not trigger the pop up.
@Wendy_Minai1 : An answer was already provided in the other thread you posted in. Please explain in that thread why the proposed solution does not work for you instead of posting the same question in multiple threads.