Progress bar on Taskbar not updating when minimized

[Timur Born]

<p><strong>Reproduction steps: Start a scan, minimize AVPUI.</strong></p>
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<p><strong>Actual result: Progress bar on Taskbar icon is not updated while AVPUI is minimized.</strong></p>
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<p><strong>Expected Result: Progress bar keeps updating while minimized.</strong></p>
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<p>No idea if this even qualifies as a bug or not?!</p>
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