I'm using QGIS 2.18.17
When I'm editing (e.g. removing objects) from a shapefile in QGIS and click to save the edits, all geometries are lost. All non-deleted objects are still present, but they do no longer contain a geometry (no objects visible in the layer and, when copying the objects from the attribute table in an Excel-document, the column "wkt_geom" is filled with NULL for all objects).
At first, I thought the problem only occurred with a point layer (shapefile), but today it also occurred with a polygon layer (shapefile).
The same thing occurred when I wanted to save a selection from a point layer as a new shapefile. The shapefile is created and the dbf-table is complete, but no geometries are present.
As I cannot imagine it concerns a bug in the used version of QGIS (as it is such a basic functionality), I assume the problem arises when saving the file with extension .shp (which stores the geometry) of the shapefile.
I'm working at a local government and the environment which I'm working on is a thin client (access through a Citrix viewer to a remote server) where a desktop environment is created which is identical for all users within the local government. All data is also stored on the same remote servers.
Anyone who had a similar problem in the past and found a way to solve it?
Edit: further investigation indicated that the cause eventually could be found in the way QGIS handles the network folders (on a Windows 2012 R2 Server), as the problem does not occur when writing on the local disk. Could it be something with some difference between relative and absolute paths? I already tried to switch this setting (without closing QGIS) but without result.