Progress bar debouncing ignores updates within a single update interval #24728
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Description
Prerequisites
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Steps to reproduce
& {
[CmdletBinding()]param()
$pr = [System.Management.Automation.ProgressRecord]::new(0, "activity", "description")
# write the progress record once, which renders the progress bar and starts the 200 ms debounce timer
$PSCmdlet.WriteProgress($pr)
sleep 0.1
# update progress record state and write it again - this write is ignored, and the progress bar still
# shows "description" instead of "new description", even after the 200 ms debounce timer expires
$pr.StatusDescription = "new description"
$PSCmdlet.WriteProgress($pr)
sleep 1
}Expected behavior
Progress bar briefly flashes with description and then changes to new description. Even if the update is not picked up immediately, I'd expect that the updated progress bar state should be stored and rendered on the next repaint after the debounce timer expires.
Actual behavior
Progress bar is stuck on description and new description never shows.
Environment data
Name Value
---- -----
PSVersion 7.3.0-preview.2
PSEdition Core
GitCommitId 7.3.0-preview.2
OS Microsoft Windows 10.0.19045
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0Visuals
No response