For a (long) while, when I open Gwenview I also get what a separate view hat is another thumbnail view. I can close it without that affecting the main Gwenview application.

I have not been able to find a way to prevent the extra thumbnail view from appearing.

Help.

Gwenview Version 19.12.1
Libraries:
KDE Frameworks 5.75.0
Qt 5.14.2 (built against 5.14.2)
The xcb windowing system

That is a FREE extra. Be happy!!!