Left column content is clipped on the right (looks covered by the center).
Measured offscreen: the left QScrollArea has h-scroll AlwaysOff while its
inner content demands 829px min width vs a ~428px viewport. The driver is the
样本行 QComboBox (minimumSizeHint ~743px from its long '第N行·货号·标题' item),
which inflates the preview group. Documented root cause + fix direction
(constrain combo size policy; left scroll AsNeeded).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
adminandClaude Opus 4.8
7dc907eb78
