Element::editProperty() gave PropertiesEditorDialog no size of its own,
so the dialog fell back to its sizeHint, which is sized for the compact
general-purpose editors it usually hosts. A PLC master instead shows a
six-column IO table that grows horizontally, and the dialog came out
too narrow to read those columns in.
For a master whose type is PLC, resize the dialog to three times its
natural width before exec(), keeping the natural height. The width is
clamped to the available screen so it cannot run off the display, and
every other element type opens exactly as before.
Kellermorph
3457a88e81