Unable to re-order participant tiles

Hi all,

I am completely unable to re-order participant tiles during meetings with the latest (5.15.11.7239) Linux client, however this does work with the macOS tile. I cannot find any documentation indicating that this feature is not available on the Linux client, so I assume there may be an issue with my installation. Or does anyone know if this is not possible in the Linux client? Any tips or suggestions would be greatly appreciated!

Thanks