UpdateCursor requires Spatial Index Recalculation bug

ZacharyUhlmann1

I'll keep it simple.  Every time I run arcpy.da.UpdateCursor() either via the Python console, a Notebook or with a Python script to update an attribute table, the entire feature layer disappears from the map.  Additionally, other feature layers disappear from the map (still present Table of Contents).

with arcpy.da.UpdateCursor('feat_in_TOC', ['fld_name']) as cursor:
    for r in cursor:
        new_val = '{}_new'.format(r[0])
        r[0] = new_val
        cursor.updateRow(r)
del cursor

After running (successfully!) the feature layer has disappeared from the map.  To fix this, I have to go to Recalculate the Index via the feature Properties --> Indexes --> Spatial Index dropdown --> Recalculate.  The feature layer returns.  

Note that the code sample has been run with different variations, field types, etc. - always same result.  Just a simple example.

Note that this has been occurring since version 2.<8 and 9> ( https://community.esri.com/t5/forums/postpage/board-id/arcgis-pro-questions ), so it's not a version thing. 

What is going on?

thanks,

Zach

Pro 3.02

ZacharyUhlmann1

Have you tried Recalculate Index from the properties of the feature layer in the TOC?  Perhaps there is a programmatic way to do that, but it's a 15 second thing, then wait a minute + for the maps to refresh.