wilf21 对 Mark All Read Button 发表的评价
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Dear @DS, your suggested edit works perfectly on v68. Thank you so much.
Oh, except that it seems to disappear from the TB toolbar each time I restart TB :(
Further investigation shows it only does not persist on the Menu Bar (which is where I always have located it). It remains ok on the Mail toolbar, though.
TB68.2.0 64 bit
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