https://docs.librecad.org/en/latest/guides/blocks.htmlAccording to the manual, blocks are supposed to behave slightly differently depending on whether they are inserted from the Block List or from the Library Browser.
However, in my case, I don’t see any difference — they all behave as if inserted from the Block List.

For example, when I insert the cross-shaped block (block12) multiple times from the Library Browser, only a single instance is created in the Block List. If I modify one of the inserted blocks, the changes affect all of them.
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LC 2.2.1.5
Windows 11