Missing Dummy in Champions gate and minions not attacking dummy

apology for poor English
when were you when dummy dies ?
I was sat at refuge drnking Jurla bathwater wen Eldar Gasper call me
“Dummy is kil”

Actual bug: finished an arena run and spawned back in champions gate, went to dummy to test new ring but my minions would not attack dummies even when commanded and they can’t be hit, also no dummy in the last area.

Ok so it happens after every arena completion it seems and is not limited to minions. Dummies are just untargetable, cannot be hit and one is missing.