Swamp chunks being loaded at my plains

I've set up my base near my spawn point (desert/plains). Since update from 0.14 to 0.15 I've noticed that some chunks close to my base walls are being loaded as swamp chunks. So far not a big problem but I fear that the game generates such chunks in vital structures of my base (mob grinder, stables, etc). I'm currently running MCPE v0.15.2.1 in my LG Nexus 4