Bug report

Horizontal and vertical lines appear in the merged Spreadsheet cells when they are disabled.

** Possible workaround could be to apply the following CSS:

      #spreadsheet > div.k-spreadsheet-view > div.k-spreadsheet-fixed-container > div.k-spreadsheet-pane > div.k-spreadsheet-data > div.k-state-disabled {
        opacity: 1;
        color: #a3a3a3;
      }

Reproduction of the problem

1. Open this Dojo and run it
2. There are is a horizontal line above the cell with text "Merged DISABLED cell and there is a horizontal line above". There is a vertical line inside the cell with text "Two cells are merged horizontally and the result cell is disabled. There is a vertical line that should not appear"

Current behavior

When Spreadsheet cells are merged and the result cell is disabled, there are horizontal or vertical lines that appear inside the merged cell.

Expected/desired behavior

No lines should appear inside the merged cells, no matter if they are enabled or disabled.

Environment

• Kendo UI version: 2020.3.1021
• jQuery version: x.y
• Browser: [all]