Able to dupe Powered & Activator rails, by simply pushing a rail onto an invalid block with a rail of the type you would like to dupe next to it (this rail must be powered).
The rail being pushed must be facing the opposite direction of rail next to the invalid block.
I can actually explain why this happens:
Basically the rail gets pushed onto the piston, then tries to connect to the other rail, it will then pop off since it cant be on the invalid block, although the rail then gets powered by the rail it was trying to connect to, causing an instance of it to still be there, which then also pops off.
I should also mention that if the rail is facing the same way, it will get removed... (also bug)
Here is my video on the subject: https://youtu.be/5hcClvAKtM4
(I used a piston as the invalid block in my video)
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20w21a is affected. This also can duplicate detector rails if there is a minecart above the block that the detector rail is pushed on to. I'll upload a short video demonstrating this.
I should also mention that if the rail is facing the same way, it will get removed... (also bug)
That is MC-152037.
Appears to be fixed in 1.16.2 Pre-release 2, likely is affected by the fix for MC-152037.
@unknown, are you sure this still exists in 1.16.2 Pre-release 2? I tested it in 1.16.2 Pre-release 2 and I was not able to reproduce it. Could you please upload a video of you reproducing this bug in 1.16.2 Pre-release 2 while the F3 debug screen is open?
Please provide a small video with the debug screen enabled (hit the F3 key) demonstrating the issue in 1.16.2-pre2.
Also affects 1.15.2