b1: Bugs in file recognition config

[xnview]

In List and Icons mode, recognition using extension is NOT used at all, right?

I use only extension (if enabled) too

I do not quite follow.
'Scan file headers in folders' is the only option for List and Icons.
If headers are to be scanned, file types are determined by header.
If not, file extension is used for the files that are not scanned?

But when header is scanned, i use extension too if enabled. So info for BMP renamed JPG can be loaded