Currently maximizing the window of CM in Standard, Wide message and Wide message list views preserves all columns widtsh of the Message list except the last one which gets stretched to fill the UI. This is a waste of space because the last column usually is least significant and short info (e.g. Date or Size) and it receives a lot of unneeded space, yet the Subject, being usually the longest one, remains trimmed because of its fixed width. It would be much better to either: - keep the last column fixed and stretch the Subject column instead. Then if there are many messages with lenghthy subjects (as it is quite often the case with RSS) one can quickly toggle maximization of the window to view them. This can be very useful on large/wide screens where one doesn't keep Claws maximized all the time. - or provide preference to configure which column one wants to have "stretchable"
Unfortunately, this is a limitation of the widget we're using for the message list. Only the last column can stretch automatically when the widget gets resized.