$MaxQueue is 0 in End Block, PowerShell 2

[RamblingCookieMonster]

MaxQueue is set to 0 in End block. Reproducible in PowerShell 2 (Native and -Version switch):

1..2 | Invoke-Parallel {"What?"} -Verbose

Result:

VERBOSE: Throttle: '20' SleepTimer '200' runSpaceTimeout '0' maxQueue '0' logFile 'C:\temp\log.log'
VERBOSE: Creating runspace pool and session states
VERBOSE: Creating empty collection to hold runspace jobs
VERBOSE: Adding 1 to collection at 1/20/2015 7:52:26 PM
VERBOSE: "1/20/2015 7:52:26 PM";"Removing:'1'";"0 minutes";"Completed";
what
VERBOSE: 0 items running - exceeded 0 limit.

First item runs, then we get stuck thinking we've reached the MaxQueue ceiling.

[RamblingCookieMonster]

Not sure exactly what happened. Begin block sets $MaxQueue, verified with Verbose output.

In PowerShell 2 only, End block, Try block, we don't see this unless we reference the Script scope.