Stage 3 block verification failed for #1000002 on Kovan with tracing turned on

[mura-admin]

I'm running:

• Which Parity version?: Parity-Ethereum/v2.0.1-beta-e7dc0be-20180726/x86_64-macos/rustc1.27.2
• Which operating system?: MacOS
• How installed?: homebrew
• Are you fully synchronized?: no
• Which network are you connected to?: kovan
• Did you try to restart the node?: yes

State DB configuration: fast +Trace
Operating mode: dark
Warning: Warp Sync is disabled because tracing is turned on.
Configured for Kovan using AuthorityRound engine

Hitting this error:

Stage 3 block verification failed for #1000002 (0x2c27…b9a6)
Error: Error(Block(InvalidDifficulty(Mismatch { expected: 0xfffffffffffffffffffffffffffffffd, found: 0xfffffffffffffffffffffffffffffffe })), State { next_error: None, backtrace: InternalBacktrace { backtrace: None } })

This does not occur with tracing turned off. I've tried killing the database and restarting but it hits this error again.

[mura-admin]

I should note that syncing stops after receiving this message/error and disconnects from all peers.

[mura-admin]

Downgraded to Parity/v1.11.8-stable-c754a02-20180725/x86_64-macos/rustc1.27.2 to see if that would help. It hits the same error and stops syncing.