0.53: Create Thumbnails for Whole Folder conflicts

[WindHydra]

After disabling Create Thumbnails for Whole Folder:
1) JPEG lossless transformations becomes greyed out (can still do lossless rotation in Browser mode).
2) File filters becomes inactive when opening a file directly with Viewer. Need to go into browser to filter the files.

[xnview]

After disabling Create Thumbnails for Whole Folder:
1) JPEG lossless transformations becomes greyed out (can still do lossless rotation in Browser mode).

When you select a file? The file has his thumbnail?

2) File filters becomes inactive when opening a file directly with Viewer. Need to go into browser to filter the files.

Could you explain me more?