It appears that detector rails switch the direction of the rail before them (in relation to a moving minecart) before the detector rail is hit, under certain conditions. This is difficult to explain in words, so I have attached a photo diagram.
Diagram:
[media]
Expected behavior:
When a chest or hopper minecart is placed on rail #1 (see diagram) and travels down the slope, I would expect rail #5 to switch directions to connect to rail #6 after the detector rail has been hit.
What actually happened:
When a chest or hopper minecart is placed on rail #1, rail #5 gets flipped when rail #4 is hit, and the detector rail appears to be in a powered state (see result photo below) before even being hit. Chest/hopper minecarts are then sent to rail 6 instead of the lower branch with the detector rail (so the detector rail never even gets hit)
Result photo:
[media]
Conditions:
This does not happen if the chest or hopper minecart is placed on rail #2, it must be placed on rail #1
This can also be reproduced with a slope of 5 normal rails, instead of 1 normal, 1 powered, 1 normal as shown in the photos. This leads me to believe that the chest/hopper minecart must hit a certain speed for this glitch to happen.
Unable to reproduce this with furnace minecarts, tnt minecarts, or normal minecarts under these conditions (maybe needs more speed on the slope?)
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migrated
migrated
Same thing is happening in my wife's test world in 1.15.2. She has multiple powered rails leading into a turn and a one rail drop after the turn followed by a curved rail and a detector. The detector triggers when the chest minecart is on the slope prior to the curved rail which is triggered by the detector before arriving at the second curved rail.
migrated
All five types of minecart activated the detector rail for me too early (on '4'). However the chest and hopper minecart behaved inconsistently with the others. They would jump to '6' and go upward, the other three types of minecart would continue down along '5'. Tested in 1.16 Release Candidate 1. Does this duplicate MC-868 in that case? or is the inconsistency between minecart behavior a new bug?
Edit: Tested with Command block Minecart, also went downward.
violine1101
Thank you for your report!
We're tracking this issue in MC-868, so this ticket is being resolved and linked as a duplicate.
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