When a block reward is spent together with other outputs in the wallet and that block reward is later orphaned, the wallet does not show the other funds as available anymore. Even a -rescan is not enough - only -zapwallettxes or an explicit abandontransaction "recovers" the funds. I prepared a test case that shows this behaviour.

Is this a known issue or the expected behaviour? While this situation is something that will presumably not occur in practice (as it requires a long reorg), I wonder if that transaction should be automatically abandoned as it seems clear it won't be able to be confirmed anymore.