The Main-tab pane and the full Recent QSOs tab are the same component sharing
one storage key, but the pane is about half as wide — so it wants fewer and
narrower columns. Whichever was opened last rewrote the other's widths.
The pane now stores under "mainpane", which also scopes its award-column
visibility and widths. The full tab keeps the historical key, so its layout is
untouched; the pane starts from defaults once.
rouggy
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