Hi,
I found two bugs in Winbox, easy to reproduce.
Run Winbox, open Firewall window, Filter Rules tab.
Right click for popup menu, mark 'Show Categories',
next mark 'Detail Mode', next mark 'Inline Comments'.
Scroll vertical scrollbar down and bug no. 1 appear.
Latest rules are not visible.
Next unmark 'Inline Comments', next unmark 'Detail Mode',
next unmark 'Show Categories' and scroll vertical scrollbar up.
Second bug, big black rectangle at the top of list.
Tested on MT demo routers , as you can see ROS 4.16 and 5.0rc8 is affected.
Regards, Grzegorz.