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I disabled Automatically mark messages as read but it isn't working

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I just installed Thunderbird on an up to date Windows 11 PC and unchecked the box Automatically mark messages as read, but it keeps marking all of my messages as read.

Help please!

I just installed Thunderbird on an up to date Windows 11 PC and unchecked the box '''Automatically mark messages as read''', but it keeps marking all of my messages as read. Help please!

All Replies (4)

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Does that also happen in Troubleshoot mode?

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Yes, it happens in troubleshoot mode too.

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Marks them read where? In Thunderbird, or on the server?

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In Thunderbird on my Windows 11 PC

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