Can you give the bug a name, so that when you fix it we know what you are referring to as the fix?
"Improved top surface quality" or something similar.
It is an issue that we are working on atm, but I cant guarantee thats going to be fixed in upcoming update (May).
Nice to hear, hope you can fix the problem.
No, I added an extra block on top of my model.
The most important thing for me was that there can't be any holes in this block and I used 90/45 degree angles in the shape of the block.
I also left some room between the edge of this block and the edge of the model and the edge of the holes.
It would depend on your model, if this approach is possible at all.
Or perhaps you would need multiple of these blocks between all the holes in your model, to cover up the uneven lines..
Here's another test with a rectangular hole in the block (ABS) :
Thanks for the info, i will give it a try