The axis order of a coordinate reference system is determined by it's definition by its named authority.
Most widely used authority for projections is EPSG
EPSG::4326 is a coordinate reference system defined by the EPSG authority.
Looking at the EPSG Geodetic Parameter Registry for EPSG::4326 we can see (WKT version) that the correct axis order is lat/...
And the moment after I had written the comment, I think I understand what might be the problem: Check if you are displaying your world map on top of your points.
In the layer window, your points should be above the world map. To do a quick check, just uncheck the box beside the world map to temporary turn it off.