Ever since the 1.14 snapshots, the minecart types seem to get stuck in corners with normal rails.
There is no interference with other blocks at the corners, but the minecart would either derail or reverse.
The minecart only turns in one corner direction (Southwest) but no other.
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Thank you for your report!
We're actually already tracking this issue at MC-144605, so we will resolve and link this ticket as a duplicate.
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