IDontKnow

still an issue in 16w03a

still an issue in 16w02a

still an issue in 15w51b

still an issue in 15w49a

still an issue in 15w47c

still an issue in 15w47b

please repair this feature @Mojang! Very important for mechanism: http://minecraft-de.gamepedia.com/Schienenverkehrsanlagen

still an issue in 15w47a

It would destroy the Redstone circuits, when other signals also blocks Redstone could give to the comparator. As an example, check out the page (with download-world) http://minecraft-de.gamepedia.com/Redstone-Schaltkreise#Welt_zum_Download.2F_.C3.B6ffentlicher_Wiki-Server

Still an issue in 15w46a

Still an issue in 15w44b

Still an issue in 15w44a

Still an issue in 15w43c

still an issue 15w40a
... and 15w40b

still an issue in 15w39c

still an issue 15w39a
... and 15w39b
... and 15w39c

still an issue 15w37a and 15w38a

still an issue 15w36d

still an issue in 15w35e

still an issue in 15w35b

still an issue in 15w34b