Destructible chunks unbelievable behavior

In my project, i have done 3 destructible actors which working fine, but this 4th (wall) has pretty strange behavior…
Im using very simple BP… damage → hp=<0? → fire impulse… What is wrong?

Wow, so far most funny bug… Its impossible how its possible to achieve this bug…

Bug occurs when i scale destructible mesh, for example to (0.5) (0.5) (0.666)… If its scaled to (0.5) (0.5) (0.5), bug does not occurs… wow