Using the Oracle Top in combination with certain skirt-skirt type leg wear will result in clipping in the waist area. Affected leg wear seems to be items that have similar models like Virtu Savant's Culottes or Infantry Skirt.

Date & Time
Noticed it first time with the release of 6.1, has probably been there for longer though.

Frequency
Always

Race
All of them

Steps
  1. Equip Oracle Top
  2. Equip Virtu Savant's Culottes
  3. Run, /sit or perform any other movement to see the clipping

Examples: