Description of problem:
In the VirtualMachines page, when the number of VMs are filling the page, it is not possible to reach all of the kebab pop-up menu options for the last VMs in the table. While the pop-up menu is open, it is not possible to scroll down to reach the commands listed in the bottom of the menu, i.e. migrate, copy ssh command, edit labels, edit annotations, delete.

This bug happens only in firefox and not in chrome.
See recording for demonstration:
https://drive.google.com/file/d/1k1mSNK7Ue7PLpGYi6mS5odHmoWTJJgX0/view?usp=sharing

Version-Release number of selected component (if applicable):

How reproducible:
100%

Steps to Reproduce:
0. Log in to the UI console with firefox browser.
1. Create enough virtual machines in a namespace to fill up the page
2. On the last VMs, try to open the kebab pop up menu and the scroll down to try to reach the last commands in the menu.
3.

Actual results:
the scroll is not working.

Expected results:
the scroll should be working as in chrome.

Additional info: