[Bug]: Graphical Issues in Dungeons

[mistakadam]

What happened?

The dungeons in the Norn territory of EoTN (Secret Layer of the Snowman, Fronis Irontoe, Sepulchre, etc.) all have corrupted ground and wall textures. This issue is only happening in these dungeons that feature ice/snow textures. I do not experience this issue in other dungeons in other areas.

Steps to reproduce (optional)

1. Zone into the dungeon.

Screenshot 2026-08-15 at 3.03.12 PM.zip

2. Upon entering the dungeon, the textures immediately become corrupted.

Diagnostics (optional)

No response

[Mat4m0]

Triage update after the 2026.8.10 release:

I inspected the attached original-resolution screenshot. It confirms severe scene-level corruption in Secret Lair of the Snowmen: terrain sampling is visibly wrong and large world polygons render black, while the Guild Wars interface remains intact. That narrows the symptom, but it does not yet distinguish an ArenaNet asset or shader problem from the WebGL runtime, GPU driver, or GWonMac presentation path. The screenshot was captured on August 15, before 2026.8.10, so it also cannot establish a regression in the current release.

The current app already contains the bounded evidence needed for the next step. Please reproduce this on 2026.8.10, leave the defect visible, then choose Help → Capture Visual Corruption… → Include Images. Inspect the saved ZIP, upload it manually to SwissTransfer, and post the link here. Nothing is uploaded automatically.

Please also include:

• Mac model and macOS version;
• the exact dungeon and location;
• whether Experimental 4 GB memory is enabled;
• the selected diagnostic profile and whether Tools are enabled;
• whether restarting GWonMac or changing the Guild Wars graphics options changes the result; and
• if practical, a healthy capture from another dungeon using the same settings.

That report provides synchronized raw WebGL, OffscreenCanvas, presented-canvas, and complete-window stages plus closed graphics/runtime facts. We will compare affected and healthy captures before changing rendering code. Until that evidence exists, the cause is classified as insufficient evidence, not upstream and not a confirmed host defect.