I've just found a bug that's new to me.
I was standing at a window created with a commonly used default MOH texture "window4_frame" (and "window4_broken").
I managed to shoot out two other windows in the map without breaking the window I was shooting through. In fact it didn't even register a chip in the glass.
I replicated this glitch a further two times when I tried to video record it twice.
On each occasion the window finally broke at the same time as the third window was shot out.
Just a fun fact I thought to share.
The windows that broke had their health set to 75. The window I was shooting through hasn't had its health set... yet. Something I wasn't aware of at the time.
But even so, you'd think that the bullets wouldn't penetrate through the window without breaking it.
This would mean that on a default map without any window health setting (I think the default is 150) you could kill players by shooting through an unbroken window.
Any thoughts or further comments on this?