ROS 3.15 - Cannot sort by rule number in IP bindings

Hello,
recently I upgraded one of our hotspot gateways to ROS 3.15 from 2.49.
After upgrade, when using Winbox, I have lost the ability to sort rules by their number in Hotspot > IP Bindings (hash sign (#) in top left corner of that window is missing.).
Because of that, I cannot easily swap places between rules, I have to go to the terminal and manualy edit rule number. I use this hotspot for non paying customers, so it is important to me to be able to add new IP bindings and move them above rule for traffic passthrough.

I have upgraded my winbox to last version, and the problem remains the same.