It seems to be a good idea as you point out to always use the STR function. Everybody sais that PbP has few bugs, I would like to call this a bug but since the manual mentions that the I2C command will return different data compared how variables are usually stored it has to be a feature :-)

Thanks for taking time to think about this and if anyone ever find a reson why PBP has decided to go this way I still would like to know.