Bug report #21048
Requests made for features when outside of bbox
|Category:||Web Services clients/WFS|
|Affected QGIS version:||3.4.3||Regression?:||No|
|Operating System:||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||28867|
For WMS/WMTS, it seems that if you're viewing outside of the declared Bounding Box of the layer, then QGIS doesn't make any requests to the server. This makes sense and is a good optimisation.
But for WFS, even if you're outside of the area, if you pan-around, it still makes requests for the features.
At least, that's what I'm seeing for this (which has the data for both WMS and WFS making a good test):
The WMS requests are all simply not sent when completely outside the bbox, but the WFS requests are.