Kats
They don't focus on a player like the rest of the monsters but rather attack whoever is closest, even if the dash has already been done, they'll attack whoever is closest to the end point of the dash line this can be very annoying when you're trying to lure them away from certain places.
Oilers
They follow you even when you dash or use shadow cloak. Toxigels do this as well and it's so annoying, you just can't escape from them, it's near impossible especially cause they'll follow you all the way across the map on fire and you'll just keep getting damage and getting exposed.
Devilites
They sometimes attack while moving and sometimes even attack nothing, just throw something in the air when they can't even see you and it'll just happen to hit you. This is so annoying considering they always appear in massive groups and can wipe you out pretty quickly.
Are these bugs? Should I move this thread to the bug section?
Thoughts?
Around 2012 or 2013, I experienced a huge change in the timing of the game. I don't know whether it was caused by an update to the Spiral Knights application, increased latency to the servers, a software upgrade on my computer, or what.
The change especially affected my shielding. Before the change, I could block devilite projectiles with my shield. After the change, this was impossible, because the projectile would hit before my shield could activate. The solution was better dodging of course.
The change also meant that I had to be more conservative in interrupting monsters. Before the change, my Final Flourish would often interrupt devilites a split second before they attacked. After the change, they interrupted me instead.
So I don't know the answer to your question, but my sense is that the game's timing is no longer exactly as it was originally designed, and this might explain some of your observations, especially about devilites.
I'd be disappointed, if I weren't still amazed that I can play a real-time game with someone on the opposite side of Earth.