Toggled Daylight Sensor doesn't allow copying in Creative mode.
When trying to middle-click to copy a block on a toggled Daylight sensor (aka inverted daylight sensor, nighttime sensor etc.) it will not allow you to copy the block until re-toggled to default block state.
Steps to Reproduce:
1. Place Daylight Sensor Redstone Component in Creative Mode.
2. Toggle to Night-light (Moonlight?) Sensor mode.
3. Attempt to clone block using middle mouse click.
4. Block will not successfully clone until re-toggled.