Two possibilities to explain this behaviour:
- you may have clicked the Bullets On/Off in the toolbar or typed
Shift
+F12
Fix: click or type again
- the immediately preceding paragraph is bulleted, LO automatically emits a bullet on the basis a bulleted list has several items
Fix: set the cursor at the beginning of the paragraph, before the first character, then hit once the Backspace key to get a list paragraph without a bullet and a second time to reset the paragraph to non-list style (standard margins)
If this answers your question, please tick the check mark on the left and close your question for community benefit. If it has value for you, upvote it.