If one adds a "Change fill color" animation for a table object - the table fill color - its background color - does not change as the effect indicates.
Note that other emphasis effects, such as Spin, or Grow-and-shrink, do work.
I can confirm the bug. Steps I took to reproduce the bug: 1. Open a new presentation in Impress. 2. Insert > Table > Click OK 3. Insert text into one cell (animations such as "Spin" appear not to work with an empty table). 4. Select the table. View > Animation 5. Add [Animation] 6. Category "Emphasis" > "Change Fill Colour" 7. Start the presentation with F5 Result: The animations "Spin" and "Grow and Shrink" work whereas the animation "Change Fill Colour" shows no visible effect on the table object. Version: 7.5.3.2 (X86_64) / LibreOffice Community OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win