The ARMA Reforger consoles, both the chat window and the server messages window lack persistent presence. The server messages with team killing are so briefly present, the server message window is useless. Trying to find who team killed after the server messages disappears is futile. Within ARMA 3, this task was difficult to find the team killer, with first finding the nickname, then comparing to the player list within ARMA 3's console window. Within ARMA Reforger, almost absolutely impossible, as the messages appear very brief then disappear, also with no copy/paste features.
Although the chat window has some scroll history, the chat window also currently lacks copy/past features and other useful features that were present within ARMA 3. (eg. #userlist, select player nickname and ctrl-c/ctrl-v for copy/paste.)
In other words, many players monitor for team-killing and/or hackers, and doing so is mostly impossible within ARMA Reforger.
No scroll-back history with server messages within the upper-right area of the display!