as the summary says. I used Openoffice before and the gridlines didnt disappear when setting a backhground color to cells.
(adjusted title a bit)
This (very annoying) problem exists in Linux as well.
There is no reasonable workaround.
(making all adjacent cells a different colour does not solve a common use case, which is the heading of a table. Nor does it solve the case of background colour being used to highlight certain types of cells, which make be adjacent, but must be readily distinguished.)
If the display of grid lines is selected (the default selection), they should appear everywhere by default, including between 2 cells of the same background colour.
In that case, if a user want to hide grid lines between cells of the same colour, they just have to colour the lines between such cells the same colour as the cell.
It might be useful to some users to suppress grid lines only in cells without a background colour, but this should be another option -- since this is a _partial_ display of grid lines, and the existing option is to display (or not) grid lines.
*** This bug has been marked as a duplicate of bug 30800 ***
This is a Calc issue, therefore changed the 'Component' field accordingly.