While record mode is enabled/disabled with R, the actual recording action should be paused, when the simulation is paused with Spacebar.

Pasting a stamp (via either ctrl+v or L or K) should also pause the recording during the time that stamp positioner tool is onscreen, and then recording should resume immediately after the stamp has been pasted

Also when copying something (either ctrl+c or S) it should stop recording while the copying box is being dragged out.

Also clicking the new button, loading a save from harddrive or internet, and using the reload save button, should reset the current frame number to 000000 (and also stop the recording if it is currently recording). RightControl+R should also reset the current frame number to 000000 (and also stop the recording if it is currently recording), but without having any effect on the running simulation.