LG refrigerator makes hissing noise when icemaker/water dispenser engages

Refrigerator started making a hissing noise when dispensing water or filling the ice maker with water. The hissing noise continues for a couple of seconds after the water is dispensed. Everything else seems to be working fine. Can anyone tell me what is possibly causing the hissing noise or if this something to be concerned about?

This is also happening to us right now. Did you ever figure out what the new hissing noise was? Solution?

This is happening to us as well!

I just fixed the issue. The hissing noise was water spraying out of the ice maker/water dispenser line at the back of the fridge. Small hole had appeared there. Easy to check, pull fridge out and have someone dispense water while you keep an eye on the two water lines at the top back of the fridge.

Had the same hissing sound while dispensing water. Pin hole in the line spraying water in back of the fridge. Happened again about 3 weeks after. Not sure why the line is getting a pin hole in it.