How can I access the source data for current row in renderer? row param returns the visualRow not the real row number (which is different if grid is filtered or sorted)
What is happening here is calling the getSourceDataAtRow to share the value of a visual index of a row. Meaning, If I remove the row with index 0 (first one), next one (index 1) become visual index 0 so with your renderer it gets the value of EUR (currencyCode: ‘EUR’).
Can you tell me what you’d like to achieve in that renderer? The result of [EUR/USD EUR/USD] doesn’t seem to be an expected value in the first place.