LED light flashes when slingshots or flipper fingers are fired

[worldpeace-germany]

Hello,

I have some inserts with LEDs between the slingshots at the bottom of the playfield. I have a corbra board and the LEDs are using the boards neopixel output. These insert LEDs (not any other insert LED on the playfield) are very briefly flashing often (not always) when the nearby slingshot fires or the flipper finger is executed. Flashes mean they are in an off state and the light for a fraction of a second turns on. The color of the light I would claim is the last color being used before it was it went into the off state (90% sure, but not 100%). What can cause that behavior?

Even if there is a loose contact the signal on the data line is "off", would it flash in that case?

Any ideas are welcome! Thanks!