I have a layer of Brandenburg (Germany) in EPSG 25833 which I want to tranfrom to EPSG 4326. Similar to this answer to Transforming shapefile to WGS:84 (EPSG: 4326) in QGIS?, I set the CRS to EPSG 4326 and go to export / save as to save this layer in 4326.
Now once I try to overlay this layer with a point shapefile of hospitals in Brandenburg taken from OSM (which is in EPSG 4326 by default) they do not match at all.
What am I missing?


on the fly reprojectionfor simple visual overlaying.