Presets for bullets etc

I am having difficulties with understanding how the standard presets work.

If I select a set of lines then use the drop down preset format icon to apply “bullet”, sometimes I get a bulleted list and other times the font may change but nothing else happens. In the latter case, using the bullets format menu (far right) after using the preset gets the result I want but why won’t the preset achieve this on its own ? That is after all what you expect from a preset.

Also when I apply the “standard para” preset, sometimes I get the properly formatted paragraph and other times I get all but the first line inset and I have to try various options until I get the desired effect. For example, changing to the “body” preset then back to the “standard para” preset may have the desired effect.

Grateful for any advice