Hello tsuzumi,
Thank you for your report. Another user reported an issue related to this about a week ago and I entered a bug report for that which you can find here: UE-40476 Unfortunately, despite this issue’s prevalence, it’s been decided that we do not have the resources to work on this at the moment. I can say that the original scaling issue you reported should be able to be fixed by using higher values of the same rotation, such as using 540 in place of 180.