All three of these occurred during Thorin's enter trigger. I had a Bifur in play with storied, and it had a Dwarven Shortsword and a Ragged Short Spear equipped.

1. Unable to view battlefield. Once I selected the equipment on Bifur by clicking on the battlefield, the screen to select the card came up and I was not able to go back to the battlefield to view my opponent's creatures toughness values.

2. Unable to deselect an equipment. Once I selected the equipment in the screen to select the equipment cards, I could not de-select it. I wanted to deselect one of them, but both remained perpetually highlighted.

3. Not able to target multiple creatures. Not sure exactly what happened here, but I should have been able to trigger Thorin twice and moved equipment from one creature to another (or even re-equip the same creature) in order to get the damage dealing effect twice.