Activate redstone dust, then destroy source of it. For a moment it can activate stuff, what it was not possible before
https://www.youtube.com/watch?v=ebYTuq_G7Ec&feature=youtu.be <-- this 15 second video show, how it works. It can activete more stuff than just command block, for example TNT.
Thank you for your report!
However, this issue is Invalid.
Your game, launcher and/or server is modified.
If you can reproduce the issue in a vanilla environment, please create a new ticket.
Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang Studios or the Bugtracker.
Any plugin or resource pack issues need to be addressed to the creator of the plugin or resource pack.
If you have problems on large servers, such as The Hive and Hypixel, please contact them first as they run extensively modified server software.
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