Some table cell components do not occupy the full cell on High DPI

[Chrriis]

Hi,

I found an issue when using a scale factor.

When I set the scale factor in Windows to 125%, then I get this:

Notice the white lines: vertical at the start of column B and horizontal every 4 rows. These lines should not be there, but the non-integral scaling might be the reason.

Here is the standalone test case:
TableTestWithRendererOnHighDpi.zip

Please let me know if you need more information.