PresetM: The same is valid for the Linux version.
Native resolution of my monitor ist 2560x1600. No chance.
The program offes a resolution of only 1920x1200 windowed or fullscreen.
But even this does not work, it is simply broken.
The game runs fullscreen in a area of 1920x1200 on the left side of the screen and is therefore completely unplayable in this state.
Good work Re-Logic.
I've had this problem since the first few Journey's End patches came out. As of the date of this post I'm using the most current v1.4.0.5, and Terraria only shows 1920 x 1080 maximum resolution.
Here's my current work around of this issue in case no one figured it out on their own. For reference I'm running Linuxmint 20 64-bit Cinnamon at 2560 x 1440 resolution.
1.) Change your screen resolution to 1920 x 1080.
2.) Run Terraria and observe that it looks and works correctly.
3.) If so, alt-tab back to the desktop and change the screen resolution back to whatever it normally is.
4.) Usually this is enough. But this time on this version of Terraria and my current Linux distribution, the user interface was really small and just about impossible to read and see.
5.) So I had to go into my file manager program, press "CTRL + H" to show hidden files and folders. At the root of your home folder go into: /.local/share/Terraria
6.) Open the config file with a text editor program and adjust the setting "UI scale" to 1.0 or higher depending on what you like, then save and exit. You only need to do this step once.
Every time you exit and play the game, or re-boot your computer after this you'll have to repeat steps one through three.
The game is absolutely playable this way. You unfortunately just have to put a bit more work into it.