Windows 10: set multiple application windows to not combine in Task Bar

On a Windows 10 Pro 64-bit PC with dual monitors, I have 3 instances of the FileZilla application open.

On the main monitor, 3 separate taskbar buttons appear. However, on the secondary monitor they combine into 1 taskbar button.

I have asked Windows to Never combine Taskbar buttons.

How do I resolve this? Thanks.

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You need to set the Never combine for Multiple Displays separately:

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