Askonia being a fiery hell of a place is not a problem in and of itself.
The problem is the weird interaction between the outward pressure form the corona, and sustained burn.
Like a lot of people, I run sustained burn almost constanly. Speed is too important, and time too precious to chug along.
The weirdness comes if you try to fly into a corona with s-burn on. Your fleet slows almost to a stop with engines still going a struggles to make any headway, and yet if you turn the burn off you'll take of again at slightly less than normal speed.
Taking the inner jump point in Askonia sometimes results in your fleet hovering just out of reach of the point shimmying back and forth as it tries in vain to reach the portal until you think "oh, this thing again..." and hit <5>.
It's not a common thing at all, but it happens in all systems with large stars and close orbit inner jump points.