Can't zoom in on large stitched panorama (Lightroom Classic)

[manifestphoto_com]

I used Lightroom Classic CC to stitch 12 images from a Nikon D800 (36 Mp each) into a panorama.  Preview worked fine, and now I have the DNG file of the completed panorama (finished resolution 19223x5920 or approximately 113 mp), however the image will not resolve if I click on it to zoom in.  I have tried various zoom levels ranging from 1:8 to 1:1 and none of them will ever resolve.  The screen just turns grey like the background, and nothing further happens. 

Running Windows 10 pro on a laptop . . . Intel HD Graphics 520 which I know are not stellar, but system hash 16GB RAM plus 24 GB Virtual Memory from my 1TB PCIe-NVMe SSD and Core i7 6600U CPU.  In the past it has been able to handle whatever I throw at it as long as I'm willing to be a little patient.  Is this a system limitation, or something else going on?

Thanks.

[manifestphoto_com]

Partly solved: It appears that I was booted back into the library module without realizing it when the pano was created.  Image won't zoom in the library, but I am able to zoom in when using the develop module. 

[johnrellis · Accepted solution]

This bug has been outstanding for at least 8 months, and Adobe has chosen not to prioritize a fix: Lightroom Classic: Preview size limit | Photoshop Family Customer Community . Please add details of your issue and your constructive opinion to that bug report, and be sure to click Me Too and Follow in the upper-right corner. That will make it a little more likely Adobe will prioritize a fix, and you'll be notified when the bug's status changes.