"Fetching all records..."

[microsys.gr microsys.gr]

OS Windows 10 64-bit
Python Version 2.7.11
Flask Version 0.11.1
Application Mode Desktop
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1. View/Edit Data -> All Rows
  Speed is almost perfect - Well done.

Bug:
When clicking on top-left corner of grid to fetch all records,
on large tables pgAdmin4 crashes on  "Fetching all records..."  screen.