visual bug

Marquee tool missing bounding box while dragging & draws solid black lines (PS 2026 / v27.1.0 / Intel Mac + AMD, Sonoma)

I’m running into a visual display/GPU bug specifically with the Marquee tool in Adobe Photoshop 2026 (v27.1.0) and need some help.

The Problem: 

When I click and drag the Marquee tool, the active bounding box is visible, but solid black. The marching ants only appear after I release the mouse and the selection is made.

The absolute only thing that fixes this is for me is going to Preferences > Performance and turning off "Use Graphics Processor." When the GPU is disabled, the marching ants appear perfectly fine while dragging. However, losing that GPU acceleration ruins overall performance.

I have tried absolutely everything within Photoshop's settings to fix this without losing the GPU, including:

• Changing the Marquee/Selection color and overlay options in Preferences.
• Unchecking individual options under Performance > Graphics Processor Settings > Advanced Settings (such as turning off OpenCL or changing the drawing mode) did not help.

• Resetting the Marquee Tool.

• Resetting all Photoshop preferences on quit.
• Standard system restarts and cache clears.

Nothing in the other settings or color tweaks helps.

My Specs:

• Photoshop Version: 2026 (27.1.0)
• Processor: 3.8 GHz 8-Core Intel Core i7
• Graphics: AMD Radeon Pro 5500 XT 8 GB
• Memory: 128 GB 2667 MHz DDR4
• OS: macOS Sonoma

This suddenly started, and while minor gets sketchy when using it on dark canvases. Does anyone have any additional insight?