If i’m in a dropdown within a web page, I expect if I use the simulate specific key action and choose the down arrow, it will just go down one element but instead it jumps to the end. is this the expected behavior?
It depends on the element, I guess. For a standard HTML <select/>, I’d expect one simulated tap = one line down. But there’s a lot of variation these days, often with a lot of JS and markup overhead, and sadly, not everything behaves as expected. 
If you could point me to the specific page, I could take a look.
It’s fastmail so you may not have access, here is a screenshot. With my down arrows, i can hit Reply, Reply to All, Forward, and so on.
I’m a FM customer, so I could take peek.
As I thought, the dropdown in question is not a HTML <select/> dropdown but an HTML structure. Not sure yet what’s going on with the simulated typing, gotta look into it.
Meanwhile, maybe this info is of help to you: Some of these options have KB shortcuts when that Actions menu is open, which can be seen when hovering the mouse over them (e.g., Reply can be triggered by typing R).
Thanks. There’s no keyboard shortcut for ‘show raw message’ but I see it for reply and forward.
Was able to reproduce the issue, and it looks like I’ve internally confused the ↑ and ↓ keys, i.e. Browser Actions sends the wrong key code. So there’s the problem. 
Apologies.
For the time being, i.e. until the next update is released, use the Cursor ↑ key instead to simulate the down arrow.
Thanks for bringing it to my attention!