Extra line in potato texture (full grown)

Extra texture line(s) in full grown potato farm
To reproduce:
1. Find/grow potatoes
2. Grow potatoes to last level
3. Look at potatoes like an ant (having a block so that it looks half of you in 3rd person, hard to explain)
4. Find line (there's a specific spot where you can see 2)
Wish I could use a screenshot, but can't find ".minecraft" file.