AI may build adjacent to my station, but not vice versa

[holzensp]

I dare not say whether I have found a bug, or whether this was a design choice and I can't really find it anywhere, so hopefully this isn't a double-post.

When I try and build a station right next to a station of an AI competitor, I get the error:

Can't build railroad station here... Too close to another station/loading area

I understand this error, no problem. However, apparently, the AI players can build stations next to mine. This is extremely annoying when trying to replace a city airport with a metropolitan airport and only after demolishing finding out that a competitor put a bus stop right beside it. Result: airfield gone

Did I miss something, or is this behaviour wrong?

[planetmaker]

Discover the magic of Ctrl+click

http://wiki.openttd.org/Hidden_features

[holzensp]

Ah, thanks... I had found Ctrl+build for joining stations, but didn't know it also worked for this case. Works: me=happy