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case GridDirectionType.Left: while (targetCol >= 1 && !enabled) { // skip invisible and covered cells while (targetCol >= 1 && (grid.GetColWidth(targetCol) == 0 || gridModel.CoveredRanges.Find(targetRow, targetCol, out coveredRange) && coveredRange.Left != targetCol ) ) targetCol--; if (targetCol >= 1) { gridModel.CoveredRanges.Find(targetRow, targetCol, out coveredRange); style = grid.GetViewStyleInfo(coveredRange.Top, coveredRange.Left); enabled = style.Enabled || grid.IsDesignMode(); style.Dispose(); // not enabled, continue search if (!enabled && targetCol >= 1) targetCol--; } } break;So, it does rely on covered cells heavily. If you can attach a sample project, or submit a Direct Trac support incident with a sample, we can see if we can spot something here.