Just upgraded and the sweep recorder/freq mask trigger is a bit annoying with the drag resize and buttons. That doesn’t match the way the other parts of spike work.
I think it should have a minimise icon like all of the grouped settings on either side of the sweep display.
Put the two headings on the same line and remove the buttons to save vertical space. Just display/hide the pane when the heading is clicked. (Sweep recorder or Frequency Mask Trigger).