Both Knock Down and Phantom Strike seem to drastically lower their range while the user is airborne. Can be tested by holding their buttons to see range, and jumping.
While playing the game or anything, sometimes when you alt tab to something else the game will halt entirely as if its crashing. Tabbing back in doesn't resolve this, but tabbing back and forth a few times will unfreeze it eventually. Only seems to occur in Borderless Windowed, or at least...
When you're in a party and in a game and hit escape, you can see the option in the main menu under the lobby players. It clearly says "Voice and text chat", and when set to party-only does nothing about text, though the voice part works if you use the voice - party keybind at least. The text...