Namaskaram Zoho CRM team,

      In Zoho CRM functions, functions with 'Related List' category is shown in below image. Only one function available in that. So, there is no need for scroll bars.

Now, Changing the Category to 'All' using category dropdown. That is shown in below figure.

Then we scroll down in the functions list. That is shown in following image.

Now, if we changing back the category to 'Relative list', the scroll bar is still being as previous. Because of this the function has been hidden. We have to scroll up to see that. Please refer following image.