Cell color in a table ignition 8

Hi All!
I have a table where the backgroung changes if the value greater than 0 to green. Works great. In 7.9.
In 8.03 it first only paints a thin line to green, then when I click on another cell in the table it will repaint the whole cell as green.
Ver 8 image
Ver 7.9 image

Is this the same project upgraded to 8?

how are you painting them exactly?

Yes, upgraded from 7.9.
I don’t paint, I using Table customizer, P-bar background.

Looks like the cell is in edit mode in v8.