You say "don't have this problem", but given sufficiently unstable mains input, the Philips bulbs too will do this. Source: I just had a problem with a malfunc

You say "don't have this problem", but given sufficiently unstable mains input, the Philips bulbs too will do this. Source: I just had a problem with a malfunctioning light switch (not even a dimming switch, a plain two-state switch) wherein sometimes it would poorly complete the circuit, and one bulb out of the four on the circuit would start oscillating on and off. (If you removed the one bulb, another would start. If you plugged the first bulb back in, in the original slot or another, it would happen to the first bulb only.)