Hey. Not sure if it’s a real bug but in lambda core there used to be red railings. Now they have a wrong texture and look rusty instead. Please make them nice and red again 
Did you grab a screenshot of it? Either that or the map name to try and narrow it down to find.
That looks as intended, was the same in the mod release. Thanks anyway!
Hmm yea… Noticed that later aswell… Sorry… But about red railings… There where so many of them in HL1… Same for red ladders. Not sure if I have seen any in BM. Do you know if you have them in BM? Personally I really liked them.