I have the same issue, but worse. I have 2nd and 3rd level drop-down menu also: when you try to select an item from the drop-down menus, it often disappear like you move the cursor out of them. It’s very annoying, you must try and retry to open the desired page.
I invite you to try it on test2.nicem.it going on “Prodotti” and going down to 2nd e 3rd level menù.
I disabled the “rollin effect” but the issue persist. This is a bug I expected to be solved in one theme update. Surely it must be fixed before our website goes on-line (now is under construction on test space).
Re: drop down menu is flickering/jumping when trying to select it