Found a recent report on Steam, as well: https://steamcommunity.com/app/1086940/discussions/3/3808408747679763268/

As the title says - if SH summons spiritual weapon (in my case, greataxe), I can't end her and weapon's turns. A small list of remaining actions shows up, with everyone having bright hourglass, and when I click the last character's end, nothing happens. The list just stays there, with the only active option being "Cancel End Of Turn".