Captured at Holtburg landblock 0xA9B4 with ACDREAM_PROBE_INDOOR_ALL=1.
Result: 123 EnvCells in Holtburg get [indoor-upload] requested but
ONLY 97 get a matching [indoor-upload] completed. 26 cells silently
fail in WB's PrepareEnvCellMeshData / PrepareMeshData. The first
interior cell 0xA9B40100 — likely the inn entry or another major
building anchor — is among the failures, exactly matching the
user's "floor missing" symptom.
Other hypotheses ruled out:
- H2 (empty batches): completed cells have cellGeomVerts=14-86.
- H3 (cull bug): walk probe confirms cells pass all visibility filters.
- H4 (double-spawn): partCount values match expected SetupParts.
- H5 (transform double-apply): xform probe shows composedT==meshRefT;
no double-apply.
- H6 (MeshRefs structure): lookup probe shows isSetup=True and
partsHit≈partCount for uploaded cells.
Phase 2 plan: wrap PrepareMeshDataAsync with our own catch-and-log
in WbMeshAdapter so the swallowed exception (most likely cause of
the 26 silent failures, per WB ObjectMeshManager.cs:589) becomes
visible. Once we know the actual failure reason, target the fix.
Also flags IsEnvCellId false-positives on GfxObj IDs whose lower 24
bits ≥ 0x0100 — tightening recommended in Phase 2.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
