Bug report #19457
WFS layer features disappearing
|Category:||Web Services clients/WFS|
|Affected QGIS version:||3.2||Regression?:||No|
|Operating System:||Ubuntu 18.04||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:||invalid|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||27285|
When opening in a QGIS project more than one WFS layer (same server, same CRS), when zooming or pan the map, the features are randomly appearing/disappearing, apparently without a reason. Same behavior by clicking the Refresh (F5) button. Opening attribute tables sometimes there are all the features attributes, sometimes no rows, sometimes all the rows filled by NULLs.
The same problem was present in 3.0.x version, with oldest versions (2.18.x, 2.14.x) all works well.
I'm using Ubuntu 18.04
Thanks for your attention!
#4 Updated by Willem Buitendyk about 2 years ago
I tried opening this project. I had network timeouts. Zooming around would have some layers show other not intermittently. I then tried F5 reload and QGIS crashed. Here is a brief result from a crash report:
Process: QGIS 
Version: 3.2.1 (3.2.1 [exported])
Code Type: X86-64 (Native)
Parent Process: ??? 
Responsible: QGIS 
User ID: 501
Date/Time: 2018-08-03 20:00:31.181 -0700
OS Version: Mac OS X 10.13.6 (17G2208)
Report Version: 12
Bridge OS Version: 2.4.1 (15P6703)
Anonymous UUID: 6D13771B-1DCB-2D6D-60FC-1CD9C5D574D4
Sleep/Wake UUID: 20FC4CA7-F111-4498-BD50-9C0522246880
Time Awake Since Boot: 11000 seconds
Time Since Wake: 730 seconds
System Integrity Protection: enabled
Crashed Thread: 25 QgsWFSThreadedFeatureDownloader
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler 
I also see this warning a lot: 2018-08-03T20:04:50 WARNING Cannot create temporary SpatiaLite cache
I have tried 0kb cache, render caching off, still I get the warning.
#5 Updated by Giovanni Manghi about 2 years ago
- Status changed from Open to Feedback
michele zanolli wrote:
Can anyone confirm?
I tested the project for several minutes on the latest 3.2 and had no issues whatsoever doing any of the operation you say.
I strongly suggest to try again on a clean/new QGIS profile or without any 3rd party plugins.