The same must be done with T. Only you need to press the T button.
Press the button on the keyboard / then use the ESC button to close it and you need to do this many times for the bug to work.
If you press and close the chat with / and T many times, the bug will work.
Then why when pressing a slash 2 slashes are written. This was not the case with older versions?
No. Here is a video that reproduced the bug.