The file "....\Roaming\LibreOffice\3\user\basic\Standard\Module1.xba" was overwritten during the installation of the new version (upgrade from version 3.5.4 to 3.6.0). New recorded macros are automatically added to this file. They are lost during installation of the new version.
Thanks for your bug report.
Already reported as 'Bug 52022 - CONFIGURATION: 'My Macros' lost after update from 220.127.116.11'.
*** This bug has been marked as a duplicate of bug 52022 ***