Superkalle, on 04 January 2013 - 09:19 PM, said:
At least, I haven't seen any official sets using the technique with tiles in 2653. On the other hand, today's designers at TLG are using more and more innovative techniques, so who knows.
If anyone has seen the technique in an official set, it would definitely make it easier to propose it as a new features in LDD.
Four brownish flat tiles 4162 put into the slots of two opposing 2653 bricks make some wonderful planks, quays, wooden walkways and so on. I personally use this technique quite a lot for themes dealing with nautical or western settings, but I have to admit that I haven't encounterd any offical set with it.
I did however do some research and found out that I was not totally wrong. Well, it's actually none of the tiles I mentioned before, but the Armada Flagship 6280 from 1996 and its replica 6291 from 2004 both use some hinge plates 4315 put into the slots of 2653. You may see it at page 10 figure 17 of the official instruction. While the '96 one is not online, the almost identical '04 instruction luckily is available from Lego.com.
So yes, out there exists at least one official set with parts put into the slot of 2653 that LDD currently doesn't support.
However, due to the fact that this issue might be easily circumvented, I'd rather rate it a "nice-to-have"-feature than an actual bug. Most sets use the 2653 slot in conjunction with the 1x8 plate with rail 4510 or the 1x2 plate with slide 32028 anyway. And these work fine in LDD.
Jabbas Palace 9516 from 2012 on the other hand uses some 30586 gliding groove plates put into the 2653 slots (instruction 1 page 41 figure 18). This isn't supported by LDD either. And it needs a bit more effort to be circumvented, as the lip of 30586 and its groove together are a bit higher than the 2653 slot. But as the lip on its own is low enough to fit in, you can put a 30586 into a 2653 slot, too. It's a pity I'm not yet allowed to upload files to prove it.
Anyway, we here have the second official set where a brick is put into 2653's slot in a manner LDD currently doesn't support. As there's enough space and no pressure put on any part, I can't see that we might have some illegal building techniques here. But by now I am increasingly uncertain, if it qualifies for a real bug. I guess you should rather file it as a feature request with a somehow low priority.