Sometimes the texture of stone is displayed flipped, as you can see on the screenshot. You don't even have to look at the arrow you also can see it on top of the blocks, that the right block is flipped. Maybe that also happens with other blocks, but I don't know that.
MC-69181
Stone Block texture flipped
Resolved
Invalid
0
That's not a bug, that's a feature... You can turn it of in the video settings, the "alternate Blocks"-option does that.