Created attachment 76064 [details]
screenshot describing the problem
See the screenshot for a better understanding of the problem: when there are more than 9 items in your list, and you selected a plan
then the indentation since the 10th item is wrong. I can reproduce with a text document created with LibreOffice 3.x, and I can also reproduce with a new document I just created with LibreOffice 18.104.22.168 on Linux (see screenshot).
This is a pretty severe regression.
Set Position and "Indent at" to at least 1,3cm.
*** This bug has been marked as a duplicate of bug 32781 ***