The coffee jug jumps from the sink to the worktop, after Will pours himself a cup of coffee.
Lettuce appears on Grace's fork between shots.
When Karen is sorting out her clothes at her work desk, the black sweater hanging over the desk lamp disappears.
When eating in Will's office, Grace eats salad from a plastic container. Throughout the scene the salad in the container changes color, position etc. Also between shots, lettuce appears on Grace's fork.
The salad Grace eats changes appearance.
A boom mic is visible when Karen offers her hand to Jack when they first meet.
When Grace first shows Will the new apartment the boom mic appears.