Hi - I like the floating serial monitor window but some functionality is lost compared to the old split pane approach (maybe this has already been noted?).
If I have a sketch that outputs to the monitor on loop() some values I want to examine can be quickly scrolled out of the window. With the split pane I could just click the serial output button to turn it off and the lower pane would retain the output values. With the current floating window, this won't work - clicking the serial monitor button only opens the window - so there is no way to suspend output.
Having either the monitor button toggle output but not close the window, or a new button within the floating window to suspend output would restore the earlier functionality.
Like the new command key feature to comment code!
--Roy