Home's ribbon has grown since the test was written. At the harness's
1400x900 the Editing group starts at x=1398, so the Replace Fonts
button is two pixels wide on screen and a click at its centre lands
outside the window: the button is found and enabled, but never clicked,
and the dialog assertion fails. The ribbon does not scroll sideways, so
the window has to hold it; 1800x1100 is what the other full-ribbon
tests here use.
cargo xtask ci fails at `test` on main without this.