From The Document Foundation Wiki
▸ doesn’t work when the document starts with a table
This problem has been fixed since version 4.2.
For earlier versions when a document begins with a table, the▸ command (or its Ctrl+A short cut) doesn’t work as expected:
- only the first cell of the table is selected instead of the whole document; and
- the whole table is selected if you redo the command.
It’s an old bug: tdf#37606
The workaround consists of inserting (temporarily) a paragraph before the table. The quickest way to do that is:
- put the cursor at the beginning of the document with Ctrl+Home; and
- press ↵ Enter to insert a paragraph before the table.