when playing Minecraft: Java Edition, the F3 Keybind is meant to see information about the game, hardware allocation, and block information. In this case, some information is covered by other information from the right side of the screen. i have a relatively normal sized monitor and it happens so its likely it happens on others too. this seems to only happen on multiplayer servers, as i have not had this issue on singleplayer worlds.

to replicate: 
-Use an average sized monitor
-load into a server
-Press F3 to open