The new Lightroom update doesn't reflect edits in thumbnails and catalogs too small.
The new Lightroom update does not reflect edits to a bunch of images in the thumbnails. It cannot "hold" the edits. It can be quite confusing to look down and see an image you just edited look undedited in the thumbnail. Also I shoot a lot of images because I do wildlife and the catalogs won't hold all my images. Adobe should work on making the catalogs more flexible, cameras are going faster and faster.