In QGIS 2.18.1 I set up Attribute table to 'Show features Visible On Map' but in the form view in the list are definitely more features than visible in the map.
In the screenshot below two features are visible in the map (Layer Road_Erlangen_2016_10_10):
- The orange one on the top right corner and
- The (selected) yellow one in the middle
... but the screenshot reveals 5 (when I scroll down ~15) feature in the left hand list:
In another case I have too few features in the list (4 in the map, one in the list):
My first thought was that the slow reacting WMS basemap aerial photo layer makes such problems, but turning it off changes nothing.
Data source is a shapefile, I created a spatial index under Layer properties and I'm in editing mode (where leaving editing mode changes nothing). Even 'Reload the table' button has no effect.
Am I missing some settings or what may be my problem?