P: PS 27.8 Move tool on Pattern Fill layer doesn't update live

When using the Move tool to reposition/shift a Pattern Fill layer, the on-canvas result is not calculated live. The move is registered internally (the pattern's actual position does change), but the canvas does not visually redraw to reflect it. Toggling the layer's visibility off and back on (hide > unhide) forces Photoshop to redraw and show the correct, updated position.

Steps to reproduce:
1. Create or open a document with a Pattern Fill layer (Layer > New Fill Layer > Pattern).
2. Select the Move tool (V) with the Pattern Fill layer active/targeted.
3. Click and drag on the canvas to reposition the pattern.

Expected result:
The pattern shifts and the canvas updates live, in real time, as it did in Photoshop 2025.

Actual result:
The canvas does not visually update while/after dragging. The move has actually occurred (confirmed because toggling the layer's visibility off then on forces a redraw that shows the pattern in its new, correct position), but there is no live visual feedback during normal use.

Troubleshooting already tried (no change in behavior):
- Disabled GPU Compositing (Edit > Preferences > Performance > Advanced Settings)
- Reset Preferences (Ctrl+Alt+Shift on launch)
- "Deactivate Native Canvas" option: not available in this build

Version / system info:
- Photoshop version: 27.8
- OS: Windows 11 Pro
- GPU + driver version: NVIDIA GeForce RTX 4070 [v32.0.15.9595]
- RAM: 64 GB