Lister Does Not Show Contents When Device Is Near Max Capacity

I am attempting to copy photos from my phone camera attached via USB. Directory Opus does not show the contents of directories when the device is near max capacity.

This is all I am able to see:

This is how it appears using Windows 10 Explorer:

What happens if you double-click "SanDisk SD Card" in one of the file displays on the right?

MTP is fairly unreliable in general (in both Opus and Explorer), so the suggestions here may help with your phone:

Double clicking does show all contents at the root of the device. I only noticed this issue when the device was near full capacity. Previously I was able to see all contents and navigate without issue.

It is good to know that I can simply double click instead of using WIndows Explorer.