I can't say I noticed it when I was using 6.3RC. It may be significant that Bridge can only do on-demand hq previews on nine selected images at a time (and 9 x 2 = 18).
I only select one image a time to preview. That can be done for the first 18 pictures. For others, they cannot be seen in the "preview" panel but I can see them in thumbnails "content" panel.
What happens if you select the folder and go
Tools > Cache > Purge cache for this folder
How have you got Bridge set for thumbnails/previews? (second square on RHS of toolbar)
Hi YammerP, you're great!
After purged cache, I can see all images' preview now. Just wonder why no need to do so in past versions of ACR.
Not quite understand your second question. I usually view the folder content as thumbnails and set a large preview panel so that I can examine a big image preview before going into PS.
Thank you for your help.
Glad it worked for you. Bridge is a bit flaky. It misbehaves a lot. Sometimes it needs a kick up the ****.
If you look at the top toolbars, to the left of the "Sort by" selector, there are two squares and a star. Click on the second square, and you'll see your preview/thumbnail generation options. "Embedded" switches off HQ thumbnail generation in favour of embedded thumbnails, "HQ on demand" generates HQ thumbnails when images are selected, and "Always HQ" generates a full set of HQ thumbnails as soon as you select a folder (and generates the biggest load on your system).