Lightroom Classic: Zooming very large images shows grey box
I am using lightroom Classic CC 7.0.1 and Camera Raw 10.0. Is there a limit to how large a file can be and still be able to create a 1:1 preview? I have a 16 bit TIFF that is 26246 x 2899 pixels. When I try to view it at 1:1 or any other size except "Fit" in the Library module, it refuses to draw (Fill works so long as I don't try 1:1 first). I just see a grey box. I can view it in any size in the Develop module or Photoshop, but not the Library module. Does the Library module have a size limit, and if so, what is it? I also checked the Task Manager and it showed the CPU and disk had little or no activity, and memory was using 15GB which is not unusual on my system. I have 3.67 Terabytes of unused disk space. I have an i7 6700K processor running at 4.00GHz and 32GB of DDR4 Sdram memory and Windows 10 version 1703.