Auto- ignition on stove
This is typical for spark-ignition cooktops
Electronic (spark) ignited cooktops generally run all the igniters when any burner is engaged in the ignition position.  This is done for both simplicity (easier to have one ignition module feeding HV to four sets of electrodes than to have an ignition module per burner or to switch the high ignition voltage on/off) and safety (to limit the size of the FWOOSH that a failed igniter could otherwise give you).