- Last time I played was before the latest patch, there I could equip a hand crossbow in both hands. But the offhand crossbow was shown as action (not bonus action) so I never used them and had a normal crossbow instead.
- Is the relative size of halfling and dog correct? If yes I want them to ride on the dog.
Yeah, that was part of the bug, I think; when you had dual-wield clicked on, but it wanted to take an action for both, or something of that nature. Something in the process of using them or switching them on or off (melee to ranged) was causing the game to crash, at least. hopefully when they get it fixed I'll be able to check the dual animations again.
And yes, all dogs depicted are actual size. Halflings are small seized creatures, and formally by the rules, they can comfortably used medium sized creatures that are built for such, as mounts... so standard out of the book mastiffs are actually perfect for them. As are blink dogs, hell hounds, boars, hyenas and wolves, to name a few ^.^
In particualr, the ranger's wolf companion looks like he'd make a lovely mount, and I was so sad that I didn't have the option to climb on...