Default Taps sound bug

On the stock (rooted) LG ROM sometimes, pretty often actually, the sound effects that play when you tap an icon or a navigation button suddenly stop working. After a while they usually start working again... Any other noticing this bug? Fixes/workarounds..?

TIA
Samsung Galaxy Note II (N7100) - from Germany (DBT), carrier-free, titanium gray, 16 GB - stock 4.1.2 (XXDME6) + CF-Auto-Root

LG G Pad 8.3 (LG-V500) - Wi-Fi, black - stock 4.2.2 (V50010b), rooted