- 
    Bug 
- 
    Resolution: Unresolved
- 
    P2: Important 
- 
    None
- 
    5.15.2
- 
    None
- 
    macOS Big Sur 11.1 (20C69)
As shown in the attached screenshot, QProgressBar goes missing when a window becomes inactive on macOS Big Sur. A sample project that demonstrates this issue is attached as BigSurProgressBarRepro.zip.

This only happens on macOS Big Sur (11.0 and 11.1), and not on macOS Catalina (10.15) or below.
