Windows7 LibreCad-2.2.0-rc2-19
If I close file from tab 'x' it opens dialog "Closing drawing". If I choose third button - "Cancel" file is closed anyway, but on next closing operation - no matter other file or program itself Librecad hangs. Just test on Win10 and there is a similar behavior - when try to close second file program itself closes.
P.S. often in this situations files that are opened in LC during hang-up are corrupted afterward