Should this have been "Bylas tam" in keeping with previous notes on not using "jsi" if past tense word first in the sentence?
Couldn't this also simply mean, 'Were you there?' I was marked wrong with that translation...
"Were you there?" is also accepted. This may be another grading bug; we have been seeing more of them recently. Course teams have no control over system issues like this. But, in general, it's helpful to use the Report button, in addition to commenting, so the team can see your complete answer.