All 4 lighters continue to ignite

We recently moved into this home. The cooktop is natural gas model KGCT305X. We were cooking dinner tonight, and after turning off the gas we sat down to eat. As we were sitting there we heard the cooktop clicking. I went over to look and all four burners are sparking.

So I turned them all on. Let them run for a minute and the sparking quits. Then I turn them off individually. As long as the front right burner is on the rest won’t spark.

Any help would be appreciated.

Paul