not sure if this has been covered yet, but, by placing a redstone dust next to a slab with a powered line of redstone dust on it, it will always snap to complete the line despite not being powered. I'm not sure if this is a bug or intended but this is what happens
Thank you for your report!
We're actually already tracking this issue in MC-3311, so I resolved and linked this ticket as a duplicate.
However, that ticket has already been resolved. That means that this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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