Minecraft 1.9.4
Forge 1.9.4-12.17.0.1932
Refined Storage 0.7.6

Neither the constructor nor the destructor work with sugar canes (on valid planting blocks, such as sand adjacent to water). They do, however, seem to work with flowers, such as the white tulip.

Thanks, will investigate this...

Looks like the constructor still can't handle sugar canes. Although, they do work with river canes from Biomes O' Plenty.

Ugh, thanks for reporting, will try to fix it.

Yeah, it is. Here's an album of it failing with sugar cane and working with river cane:
http://imgur.com/a/QAsM7

And, here's a basic example world (608.42KB, ignore the other mods):
https://www.mediafire.com/?9gvsq5txphupei8

Looks like it extends to cacti as well; the destructor will take them, but the constructor cannot place them.

Cacti can not be placed because it cannot have any blocks at its sides.

Well, balls. I even had the destructor facing down for that exact reason but forgot to do the same for the constructor. Brain's AFK.

Okay, I should have fixed this now. As an added bonus, it is now also possible to place seeds. Minecraft special cases a lot of stuff so I have to handle all those exceptions.

No, constructor is strictly for placing blocks only.

ooh automated farms? also does bonemeal in a constructor bonemeal said crop?