Map Bug, very annoying

[Sicron]

I couldnt find this on the bug list so ill post it anyway
in some maps, when the hill or sumthing goes down it blocks...well i cant really tell good...hmmmm ill try explaining with this picture

http://free.one.picturehost.co.uk/M...is can be fixed so i can trow normal again =S

 

[Pcjoe]

DJ-Ready gave a valid explination for this in the interview, something with the map compiling...

 

[Sicron]

ermmm...well i didnt know...i never heared the interview, and i dont know either where i can download it (i couldnt download it from esf world =\)