Fence looks ok. What's going on with the entrance though? It's really blurry but looks like the entrace reducer needs to be addressed. It looks as if the reducer is sitting on top of the bottom board rails.
I have a huge garden fence near a few of my hives. I used to use deer netting and would sometimes see a bee flying through it, and often running into it before taking off again back to the hive. I upgraded that to a steel fence with 2"x4" openings and have never seen a bee run into it. Your fence looks like it has plenty of space for bees to fly through, or over, so I say try it out and if it doesn't become and issue, don't fix it.
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