I get it on the lappy... GeForce 8400M G...
It seems to go away at certain sizes, like 128x128, but it's there on most other sizes, even with increments of 32.
~Sol
Well i was messing with the cap and for the Titled Background that is 4x4 is messing up if its not:
4x4
8x8
16x16
32x32
64x64
Size in power of 2n. (sounds like tearing problem in textures)
Edit: But only in zoom 200,200 if i take 300,300 then its always ok!!! same goes for 400,400 as broken and 500,500 as ok.