This has become a pretty standard sequence for me when doing certain types of PS operations.
- Open a non-raw image from Bridge into Photoshop on 1st (left) screen
- Grab the image window tab and drag it over to the 2nd (right) screen
- Maximize the window on the 2nd screen
- Perform a zoom operation (in or out, happens either way)
The bottom scroll bar disappears. If the image is zoomed in sufficiently that it doesn't fit within the screen, you can't quite scroll to the bottom.
This has happened to me with both matched 1200x1920 monitors, and matched 4K monitors. It's been going on for some months; I don't recall when it started.
Configuration:
- Windows 10
- Intel Core I9 9900K
- 32GB RAM
- NVIDIA GeForce RTX 2070 Super video card
- All files on an NVMe SSD