为什么我的循环代码在大约9个单元/循环后停止工作？

Question

代码用途：在注释中记录每个已编辑单元格的编辑日期，然后在其他工作表（包括当前工作表）中搜索该单元格值的重复项，然后添加工作表名称和重复项（如果有）的行位置。

问题：在编辑单个单元格或粘贴最多8或9个单元格的范围时，代码可以正常工作，但是更大的范围，代码将在第9或第10单元格的日期记录步骤停止。

我认为在宏启动后选择另一个单元格时，代码可能会感到困惑，因此，我确保没有任何事情试图捕获活动单元格。

我认为这可能是因为它过于占用资源，并且已尝试优化代码（我知道它非常笨拙且效率低下，如果您有任何关于如何优化它的技巧，请告诉我）。

我尝试摆弄数字并搜索9、10、15之类的数字，以查看是否在代码中不知不觉地放置了数字限制器。

function onEdit(e){
  var keyword1 = "未確定"
  var keyword2 = "確定用語集"

  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var activeSheet = ss.getActiveSheet();
  var activeSheetName = activeSheet.getName();

  //check to see if this is a sheet we want the macro to be running on
  if ((activeSheet.getName().indexOf(keyword1)>-1 || activeSheet.getName().indexOf(keyword2)>-1) && e.range.columnStart >= 6 &&  e.range.rowStart >= 3 ){


    //--------------------------------------------------------------------------------------------------------------------
    //make list of searchable sheets (for dupe searching later)

    var allSheets = ss.getSheets();
    var confirmSheet = ss.getSheetByName(keyword2); 

    var allSheetsNameArray = allSheets.map(function(sheet){return [sheet.getName()];});
    var targetSheetArray = [confirmSheet.getName()];

    //build target sheet list
    for(var a = 0; a < allSheetsNameArray.length; a++){

      if(allSheetsNameArray[a][0].indexOf(keyword1) > -1){

        targetSheetArray.push(allSheetsNameArray[a][0])
      }
    };


    //--------------------------------------------------------------------------------------------------------------------


    // Then start looking at each cell in the edited range
    var range = e.range;
    var numRows = range.getNumRows();
    var numCols = range.getNumColumns();

    for (var i = 1; i <= numRows; i++) {
      for (var j = 1; j <= numCols; j++) {

        //When looking, get the currently counted cell's coordinates and value
        var currentCell = range.getCell(i,j)
        var currentValue = currentCell.getValue();

        //Before starting, reset cell color
        //currentCell.setBackground(null)

        //if the cell is blank, DO NOTHING
        if (currentValue != ""){

          var message = currentCell.getNote()

          //Set a note on it with the contents being: a copy of the previous note (returns blank if none), the date formatted year/month/day/time, followed by a separator and the currently entered value.
          message += ( 
            Utilities.formatDate(new Date(), "GMT+9","yy/MM/dd HH:mm") + " | " + 
            currentValue + 
            String.fromCharCode(10)
          );


//--------------------Problem area?-----------------------------         
          //check for duplicates

          //loop through every name in the list of sheet we want to search (list made at beginning of code)
          for (var b = 0; b <targetSheetArray.length; b++){ 

            //targetSheet is the sheet we will be looking for duplicates in, sourceSheet is the sheet we are on and contains the word we want to search
            var targetSheet = ss.getSheetByName(targetSheetArray[b]);
            var sourceSheet = activeSheet;
            var sourceCell = currentCell;

            //store all values in the target sheet into an array
            var values = targetSheet.getDataRange().getValues();
            var searchString = sourceCell.getValue();
            var column = sourceCell.getColumn();

            //loop through every item in the value array
            for(var k=0; k < values.length; k++) {

              //find out if the value we're searching equals a value in the array. Value must not be in the same position as our current source cell.
              if(values[k][column-1] == searchString && k+1 != sourceCell.getRow()) {

                //If we've found a duplicate we make a note of what sheet and what row it's on.
                message += ("└ 重複:"　+  targetSheetArray[b]+  (k+1) + "行目"+ String.fromCharCode(10));


              };
            };
          };

          sourceCell.setNote(message);
//--------------------------------------------------------------------              

        }

      }

    }
  }
};

该代码应该能够处理粘贴到工作表中的任意数量的单元格/值。

更新：我已经清理了一些代码，经过一些试验，我发现如果删除重复检查部分，代码将在整个范围内继续运行。也许这就是问题所在？