Dear Yegor,
- I’m not sure if I understand this question. However if model that you are going to import does not have texture file but contains UV coordinates then the texture size of the imported model will be RECONTRUCTION \ Settings \ Coloring / Texturing \ Imported model default texture size. If it contains the texture file then it will use it’s resolution.
- Yes : RECONSTRUCTION \ Tools \ Unwrap … if you probably found this then it is correct
- Cen you describe the bug in more details please?