Impending Doom in Ultimatum Trials

Currently, if you have the impending doom debuff in the ultimatum trial, even at tier 1, for certain bosses, it is larger than the arena, the only way to counteract it, is to fight the boss at the very edges of the arena. Maybe it is just a skill issue, but to me it looks like an oversight. Having to sit at the very edge of the map with barely any room for moving is rather annoying and makes you worry more about the circles rather than the entire boss fight. I think it could do well with either a larger arenas, or a smaller circle, the circle already does a lot of damage, so maybe reduce the area by 15-20%.

Not sure if it is always so gigantic. I am sure I remember taking it once and it being a reasonable size. And now whenever I take it, it takes up the whole map, so maybe it is bugged?. On some boss arenas like the wind bird you can barely avoid it.

I'd like to also add that the impending doom graphic is hard to see. Depending on the terrain, the dark red circle seems to be hidden behind the grass and other effects, extremely frustrating.