Certainly not a mistake - just a simple variant:

#《中华字海》页:1420:
![《中华字海》页:1420][1]


# 字海:
![zisea][2]

(You notice how it says 非unicode字 right? So basically that means it's 打不出来的 or cannot be typed)


# 字海
![zisea][3]

(Here's "踰" with its definitions (bottom) and variants (right))



  [1]: https://i.sstatic.net/GkYKD.png
  [2]: https://i.sstatic.net/te8q5.png
  [3]: https://i.sstatic.net/3AYBn.png