Subject: Premiere 26.5.2 macOS crash in UXP workflow — diagnostic guidance requested

We’re developing Reference Match, a UXP grading panel with a custom native effect, and need guidance investigating recurring Premiere crashes.

The clearest incident is 7C994E7C-E181-40BE-BE50-7973F795DE87, captured on 10 November 2026 at 07:49:28 UTC, using Premiere 26.5.2 build 26.5.2.5, macOS 27.2, Apple Silicon.

It records EXC_BAD_ACCESS at address 0x18, followed by abort handling, with dvascripting::Transient1 passing through libdynamic-napi ArrayConcat/promise processing. The custom effect is loaded but absent from captured thread frames; we are not excluding it as a contributor.

The last persisted panel snapshot precedes a grade operation. It cannot establish whether the failure occurred during inspection, transaction execution or readback. Source review has not identified a reproducible cause.

Could Adobe advise:

1. Whether the original .ips can be interpreted further internally.
2. A supported method for collecting more useful native evidence from the hardened Premiere application.
3. The supported lifetime rules for component/parameter wrappers across awaited getters, and keyframe/Action ownership through transaction completion.

Original reports are preserved. Matching custom-effect symbols are available. Historical panel bytes are uncertain, and the installed host has since updated to 26.5.3.

We would appreciate guidance before attempting another controlled reproduction. Diagnostic files can be supplied privately after checking for project identifiers and credentials.