Please help me figure it out

[PavelN]

Good afternoon. Help out a newbie. I made a plan for a friend of his apartment of a strange shape. Very few flat walls. What I noticed - I can’t smoothly change the angle of the wall, it changes in jumps, maybe I’m doing something wrong? I also have an incomprehensible artifact in the form of 3D on the ceiling. And with the levels, I set the problem to “Make all levels visible”, but the floor texture at level “0” is not visible. Tell me what am I doing wrong?

Link to file

https://ibb.co/6YLWFzn

https://ibb.co/wpZfgBc

https://ibb.co/HHwVJ6C

[Puybaret]

I can’t smoothly change the angle of the wall, it changes in jumps

Disable magnetism as explained in the user's guide and the included help.

I also have an incomprehensible artifact in the form of 3D on the ceiling.

Select the option Flat ceiling only in the room modification dialog box. If you don't see that option, upgrade Sweet Home 3D to the latest version.

[PavelN]

I can’t smoothly change the angle of the wall, it changes in jumps

Disable magnetism as explained in the user's guide and the included help.

I also have an incomprehensible artifact in the form of 3D on the ceiling.

Select the option Flat ceiling only in the room modification dialog box. If you don't see that option, upgrade Sweet Home 3D to the latest version.

Thanks for clarifying