Hi,
Before today's update, I could join a server using 'Trackmania.exe /join={server_ip}', however after this update this no longer works, with Trackmania just saying 'Loading data' for a second, and then just loading the normal game. This feature is very useful for quality of life, and also for automation. I haven't tested other CLI commands, but they may also be broken with the update.
Hello @techiehelper thanks you for bringing this to our attention.
Are you able to give us a little more detail on this bug you are reporting, for example, are you using the official ManiaScript to write this script, or another application like Open Planet script?
Can you also provide us with a screenshot of this Loading Data error log, or take a full screenshot of your command lines in the script interface, to help us report this to the Trackmania team with more detail?
Thank you for providing all of this information @techiehelper, I will pass this on to our TM team and see if there is anything they can suggest, or any documentation that will help get this CLI working for your again 
Hi @TechieHelper the development team have confirmed that they have been unable to reproduce this issue after multiple attempts and have asked if you could answer the following:
devtrackers.gg