Two possibilities to explain this behaviour:
- you may have clicked the Bullets On/Off in the toolbar or typed
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)
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