Issue with three level submenu in nav-sm layout

I am not able to open 3rd level menu in “nav-sm” layout. The theme is having default issue with this. Please help me with this.

I am using Gentelella theme

Hi there

Hope you are having a good day and thank you for your question
I’m sorry to say but that’s how it’s designed and at this moment we cant do anything with this, if its vital feature for you have to hire someone to solve this problem
Thanks!
Colorlib Support Team