Evidence of drug use and prostitution does not inherently require a propensity warning in trials for offences of violence, but a trial judge's repeated condemnatory references to such evidence, combined with invitations to the jury to assess its relevance without explaining the limited permissible use, can create a perceptible risk of impermissible propensity reasoning that necessitates a warning. A trial judge has no power to continue a trial while a juror is absent without first discharging that juror; the only options are to adjourn or to discharge the juror under s 115 of the Criminal Procedure Act 2004 (WA).
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