This is happening for all my screens.
I’m not sure exactly what you mean by “resize the camera”. Camera’s have a position and field of view, but they don’t really have a “size”.
The output viewport, however, DOES have a size. I suspect this is what you are changing in the editor, with no apparent effect on the output. If so, this is probably due to the aspect ratio setting in the editor. Set the value to “free aspect” to allow the display to resize with window size.
If this is not what you are talking about, add some more details to your question.