I clearly remember that when i asked Lae'zel about purification as a Gith, she acused me for ignorance. o_O
Also i like that we have option to ask those questions even as a Gith ...
For one, its helpfull for new players ... and for two, i think its fine to have option to play clueless Gith, for whatever reason.

That part when your Gith, or Lae'zel didnt know what neither of you are ... seems indeed like a bug.