We have uploaded a few sample PDF files where we are seeing the thumbnails issue. Could you please have a look and provide an update containing the fix.
Another query that we have is whether this feature implements lazy loading. Could you please confirm this.
Also, any pointers on how to smoothen out the scroll issue while view thumbnails would be greatly appreciated.
We will be uploading more files as we test it out with other files.
www.dropbox.com/s/4qshab3vhqegbzn/mca-502.pdf
www.dropbox.com/s/4drws6evds1tn45/NpCompleteness.pdf 
