fire does not burn you on some sides of a block

Unable to reproduce

I reproduced it on a server, my own world and on a downloaded world so I think it is able to be reproduced.

I've crouched on either side of the burning block and there is no side which always or never sets the player on fire. I guess it's a matter of rounding errors as the pattern seems random.

Cannot reproduce

Sometimes reproducible (1.9.1-pre3). Likely a floating-point error.

Standing on the edge is safe right over it is not 🙂