Posted by dellus on Apr 18, 2021; 11:37am
URL: https://forum.librecad.org/LibreCad-crashes-following-layer-remove-and-then-file-save-dxf-file-is-corrupted-tp5720548p5720584.html

carport-test2.dxf: the bad behaviour of layer "sideview" to switch on/off the main dimension lines has been passed on to layer "roofline". I have also come to that result, see earlier post of mine.
The hatches are lost, probably a result of copy and paste.
The file has become larger. A look into the block list - yes, you have accumulated copies of the block with copy 'n paste operations.
The main dimension lines appear as continuous. If you use Properties on one of the dimensions and just confirm it with OK it turns to dashed as it should be, with the layer set to Dash tiny. Also the connectedness with "roofline" disappears. But again, with save and reopen it's back.  

Sorry