Clean GPS data show all files

[cicciobello]

Browser view
Select 1 image files _containing GPS data_

Tools > Metadata -> Clean...
Select only [X] GPS to clean GPS data
Click [OK]

Result #1: You can view selected files without GPS data AND old file with extension *.jpg_original
Result #2: File *.jpg_original have GPS data cleared (why?)

Expected: Selected file have GPS data cleared and *.jpg_original is NOT show

This bug has happened to me hundreds of times over the past weeks, but today it only happens once in a while.
This is not a big problem. To hide *.jpg_original files, change directory in tree browser and back again to original directory.

Please note: The problem seems to be solved after deleting the Thumb.db file.

Win 10, XnView MP 1.4.2 x64

[xnview]

when using 'Clean Metadata', there is no .jpg_original created, perhaps an old backup

[cicciobello]

Sorry. Files *.jpg_original is created when I change GPS coordinates.
Sometimes, the *.jpg_original files are also displayed in Browser view after changing the GPS coordinates.
Change directory and re-enter in previous directory and *.jpg_original files disappears from view.