Yesterday I mentioned an AbiathRPC bug that caused the opening of a remote level set to fail after closing one that was opened successfully. I found that the crash occurred when setting up the watchdog render planes; an original GalaxyLevel was incorrectly cast to a TaggedGalaxyLevel in the method that looks up a level ID for a given level wrapper.
The problem was that the bookkeeping on level substitutions wasn't nullified at disconnection. That made the ID lookup function think the connection was complete when it's wasn't. The old level objects were also kept around, which is less than ideal. I added a single line to the connection-closing method to fix the problem.
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