iercan opened a new issue #16866:
URL: https://github.com/apache/superset/issues/16866


   Hi.
   I was unable to edit filter scopes on dashboards and also when I changed 
time range and save as dashboard they weren't persistent. We were also 
experiencing very slow load when dashboard size gets bigger. 
   After some test I realized this is because DASHBOARD_CROSS_FILTER flag 
enabled. After disabled it, dashboard get much faster and I can save scopes and 
times of filter. 
   
   Although this flag listed as stable looks like it has serious bug and 
performance issue. 
   
   #### How to reproduce the bug
   
   1. Enable DASHBOARD_CROSS_FILTER in feature flag.
   2. Add some filter box and chart to dashboard
   2. Try to change filter scopes and default time range
   3. Refresh dashboard
   
   ### Expected results
   
   Scopes should be persistent
   Time settings should be saved
   Dashboard should load faster
   
   ### Actual results
   
   Scopes are not saved
   Time settings are not saved
   Dashboard loads slow
   
   ### Environment
   
   - browser type and version: Chrome 94
   - superset version: using apache/superset:1.3 docker image
   
   ```
       "SQLLAB_BACKEND_PERSISTENCE": True,
       "THUMBNAILS": True,
       "THUMBNAILS_SQLA_LISTENERS": True,
       "ALERT_REPORTS": True,
       "DASHBOARD_NATIVE_FILTERS": True,
       "DASHBOARD_CROSS_FILTERS": True,
       "DASHBOARD_RBAC": True,
       "ENABLE_EXPLORE_DRAG_AND_DROP": True,
   ```
   
   ### Checklist
   
   Make sure to follow these steps before submitting your issue - thank you!
   
   - [X] I have checked the superset logs for python stacktraces and included 
it here as text if there are any.
   - [X] I have reproduced the issue with at least the latest released version 
of superset.
   - [X] I have checked the issue tracker for the same issue and I haven't 
found one similar.
   
   


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