It’s on my plate to look into the fact format issues with electric image. I’ve also got an OBJ file that is giving Silo fits for certain operations, and also there are reports of Substance Painter and Silo not exchanging OBJs very well. And finally, empty meshes can’t be deleted out of the scene editor. I think that’s what I’ve got for confirmed “known issues” at this point.
There are some reports of an odd scroll-wheel issue, but so far nobody else can repro that one yet. We’ve also got a known limitation in the linux version that ALT + mouse buttons like to be used by Gnome and other DEs for other things like moving windows, so you have to switch that in the desktop environment settings so Silo is free to use it. That’s not a Silo issue per-se (Maya has the same issue), but it’s an annoyance.
I can’t promise any fixes for those issues landing in the official release for any of the platforms, since we’re already starting to ship what we’ve got. Hopefully we can have a dot release soon after that will address most or all of them. As you guys run into issues and they don’t get resolved here, send 'em on over (to email@example.com) and we’ll tackle them as fast as we can.
Edit: one more known issue, from another thread, is that the windows version can get tripped up by old Silo Data folders. Moving that folder out of the way so Silo recreates it with default data is the workaround, although it means you have to take the time to set up your prefs again in Silo.