Mouse Enter continously firing with Firefox


I’ve noticed an issue of running my mockup in Firefox, when using the Mouse Enter event handler

In Chrome the Mouse Enter action is fired once, when the mouse enters an area. However in Firefox it gets continously fired, while the mouse is hovering on an element.

My use case:

I am modeling a table with hover actions. If the user hovers over a row, the hover actions are moved into the visible area, and when you move the mouse button out these buttons are moved out:
This works pretty well in Chrome as you can see here:

However when you use the exact same mockup in Firefox, the Mouse Enter event is continously fired while the mouse is on the row and the buttons get moved and moved and moved:

I haven’t found a usable workaround yet.