Paste for filtered rows does paste twice

[danielsjf]

In Excel, you can paste over filtered rows and Jspreadsheet allows this as well. However, it seems that rows are pasted twice. Once in the correct place and once in the bottom.

Before:

Filtered:

After pasting one cell with Honda over the three cells of BMW

Issue:
It seems that the values are pasted correctly over the BMW values. However, it adds the same three values at the very end of the spreadsheet, which shouldn't happen.