Lead Developer
Hmm, what’s the reason for the custom walker? I would need to see the website and inspect the code/compare it to what it should be to see what’s going on.
It’s about 1AM here right now and about to get to bed, so I’m not as helpful as I could be, but if you’d like to email me your URL I’ll take a look first thing in the morning and will find a fix for you.
For now, perhaps try removing the arrow with CSS to avoid the overlapping.
Sorry for the inconvenience!