I'm currently using version 1603.28.0

The serial monitor has changed a bit over the last few updates, however at least one aspect has gotten worse.

Here's what it looks like for me now on my 3200x1800 13" laptop:


Back in version 1603.25.0, there were two draggable/resizable edges: The top and bottom edges of the incoming serial data. They are no longer resizable in 1603.28.0. 
The top edge is shown in the above screenshot, cutting off the textbox. The bottom edge pushes down the bottom checkboxes and dropdown-boxes, but is not as big of a concern (for my particular resolution anyway).

Also, the button with the cog icon is partially cut off, and appears to be disabled, as clicking on it does nothing. Am I using that wrong?

Thanks for the quick response!

Here is what 1603.30.4 looks like without resizing:



Notice that the input text in 99% unreadble.

Here is what it looks like after resizeing:



Notice the single button in the top-right corner. Also, the checkboxes float to the bottom of the window, while the dropdowns stick where they are.

PS: I hope these images aren't too large/small/blurry. I have been resizing them to fit in a smaller DPI browser window.