Luban 4.12.0 Support structure and other bugs J1

Hello everyone
I have noticed that since the 4.12.0 update the tree structure can no longer be calculated, it always gets stuck, it is not calculated to the end.
In addition, there are always problems starting the print with Luban.
When the print is started with Luban, sometimes nothing happens, only the file is sent, but that does not always happen.