Comment 0 for bug 1406458

Certain seed numbers cause squares to appear in the feTurbulence filter.

These are the first forty or so:

514,1977,2337,4777,8032,9615,14783,14862,14921,18607,19537,19852,19955,22456,23056,26678,27351,29383,29560,29929,30376,31314,33722,35862,36138,36213,36356,37363,37505,40512,41363,41968,43506,47416,48008,48107,49384,49896,50078,51297,51525,52820,53743,53816,54769,56567

514 is the only one that will occur in the filter editor, the seed slider capped at 1000. Editing the source, or opening a file with the other seeds will show the bug.

Windows Vista, Inkscape 0.48.5 r10040