How to Migrate from 3.3.12 to 4.0
I have tried migrating from 3.3.12 to 4.0 but all my UI Particles looked total off (They are in Screen Space - Camera). Changing the scale doesn't work as expected, instead of getting as before, the particles are far more apart and smaller than before. Is there a guide for the migration? Or how would you migrate this?
I would like to know more about this issue.
Could you please attach a minimal project (included Assets, Packages and ProjectSettings directories) that reproduces the issue?

Hi! Same problem. UI particle overrides scale parameters in whole project, scale at Rect Transform component becomes inactive and i don't have Ignore Canvas Scale property
prefabtest.zip
I see a new option there called "Absolute Mode". Is that maybe the cause of the problem reported here?
Could we PLEASE get an answer to this?
Same problem!
Same problem!
Please try v4.2.0