Posted by dellus on Mar 28, 2021; 7:09pm
URL: https://forum.librecad.org/Librecad-keeps-adding-blocks-to-block-list-tp5715315p5720470.html

If you insert a block from the library browser repeatedly, it will always be another block in the drawing. Insert it from the blocks list.
In V 2.2.0 rc you can delete multiple blocks in one go. https://forum.librecad.org/Very-large-file-sizes-tp5720110p5720120.html
As a workaround for 2.1.3 you could select and copy all the content of the screen and repaste it into a new empty drawing. Must have the same Drawing Preferences of course.