OpenXR Mitigation Mode Exits but Next Launch Restores Old Fallback Route on Quest - Reentry Baseline and State-Retention Fix

Your team resolves an OpenXR route issue, runs mitigation mode, gets a clean exit decision, and promotes with confidence. Then the next launch reverts to an older fallback route that should have been retired.

In 2026 Quest release lanes, this is a common post-mitigation failure:

mitigation lifecycle looks valid in the current window
reentry appears approved
stale route state leaks into the next launch context

The result is repeated incident churn even though the previous window looked healthy.

Problem

You will usually see one or more of these symptoms:

mitigation exit packet is marked complete, but startup route on next launch points to prior fallback branch
first-session telemetry shows route state inconsistent with latest approved reentry profile
route owner appears correct at startup but fallback lineage ID references previous mitigation cycle
clean-install and warm-install behavior diverge unexpectedly after reentry

If this happens, your issue is usually not startup selection quality. It is reentry state retention and baseline reset discipline.

Root cause summary

Most incidents involve one or more of the following:

mitigation exit does not clear or version old fallback state
reentry baseline snapshot is not treated as authoritative on next launch
route ownership token rotates, but linked fallback lineage token does not
warm-launch persistence store rehydrates stale mitigation metadata
replay verification covers current window only, not next-launch reentry window

In short, mitigation mode can end correctly while state handoff into next launch is still unsafe.

Fastest safe fix path

Define one authoritative reentry baseline record and stamp it with cycle version.
Hard-reset stale fallback lineage keys at mitigation exit.
Enforce startup route restoration from latest approved reentry baseline only.
Add next-launch reentry verification rows to replay packs.
Block promotion when legacy fallback lineage appears after mitigation exit.

If you only patch startup conditions, the issue often reappears in the next cycle.

Why this happens now

Teams now run more granular conditional rollback and mitigation workflows. That is good, but it introduces extra state layers:

mitigation lifecycle rows
cohort-specific fallback routes
reentry criteria snapshots
carry-forward debt references

Without strict state retirement rules, one old identifier can pull startup behavior toward an outdated route path.

This is especially common in mixed clean/warm launch matrices where persistence behavior differs.

Step-by-step fix

1) Create explicit reentry baseline contract

At mitigation exit, write one baseline contract that becomes the only allowed startup source for the next launch window.

Required fields:

reentry_cycle_id
approved_route_id
approved_fallback_order
cohort_key
baseline_timestamp
evidence_hash

Policy:

no startup route resolution from pre-exit mitigation rows
no startup read from stale fallback lineage keys

Verification checkpoint: startup route reference points to current reentry_cycle_id only.

2) Retire old fallback lineage keys deterministically

On mitigation exit, clear or archive prior lineage keys with explicit state:

fallback_lineage_status = retired
retired_in_cycle = <current cycle>
retirement_reason = mitigation_exit_applied

Do not soft-ignore stale keys. Retire them explicitly so loaders cannot accidentally hydrate them.

Verification checkpoint: no active fallback lineage key references prior mitigation cycle.

3) Enforce route-owner and lineage-token parity

Many teams update route owner but forget lineage token parity.

Add guard:

if route_owner_token changes, fallback_lineage_token must match same cycle
mismatch blocks startup route commit

This prevents hybrid state (new owner + old lineage) that causes hidden route regressions.

Verification checkpoint: owner token and lineage token share identical cycle version.

4) Add warm-launch persistence scrub

Next-launch regressions often appear only on warm launch because stale persistence entries survive.

At app start:

detect prior mitigation cycle keys
scrub retired keys before route resolution
log scrub result row with cycle IDs

Verification checkpoint: warm launch startup path logs successful retired-key scrub before route lock.

5) Expand replay packs to include next-launch reentry

Your current replay may validate mitigation window but miss post-exit behavior.

Add scenarios:

clean launch immediately after mitigation exit
warm launch with prior persistence
first interaction route consistency after reentry

Required rows:

baseline source row
lineage token row
route-before and route-after interaction row

Verification checkpoint: all scenarios resolve to approved reentry route.

6) Add no-go gate for legacy route resurrection

Promotion must block when:

startup route references retired fallback lineage
baseline source is not latest reentry cycle
owner/lineage cycle mismatch detected
warm-launch scrub fails or is missing

Treat this as release-critical in Quest mixed-input lanes.

Practical diagnostic flow (10-15 minutes)

When report arrives:

inspect startup baseline source ID
inspect fallback lineage status and cycle
inspect owner/lineage token parity
inspect warm-launch scrub row
inspect first-interaction route consistency row
classify and patch

This prevents misclassification as generic startup drift.

Root-cause matrix

Symptom	Likely cause	Fast fix
next launch uses old fallback branch	retired lineage key still active	enforce deterministic key retirement
clean launch passes, warm launch fails	stale persistence rehydration	add warm-launch scrub before route lock
owner token updated but behavior still old	lineage token not rotated	enforce owner-lineage parity guard
reentry approved but startup source wrong	baseline source selection bug	lock startup source to latest reentry cycle

Alternative fixes for stubborn cases

Branch A: Multiple route resolvers compete at startup

enforce one resolver as authority
secondary resolvers can only suggest, not commit

Branch B: Mitigation exit packet generated before state retirement

reorder workflow: retire state first, then generate exit packet
include retired-key count in packet proof

Branch C: Telemetry rows are present but not policy-bound

map telemetry rows to gate rules
block when required row fields are absent

Verification checklist before promotion

Candidate passes only when all are true:

startup baseline source equals latest reentry cycle
retired fallback lineage keys are not active
owner and lineage tokens share same cycle
warm-launch scrub executed and passed
first-interaction route remains on approved baseline
legacy-route resurrection gate reports pass

If any fail, hold candidate.

Prevention tips

Treat mitigation exit as a state-transition release event, not a note.
Keep reentry baseline IDs immutable per cycle.
Include warm-launch checks in every mitigation recovery replay pack.
Alert on any startup reference to retired lineage tokens.
Review owner-lineage parity in weekly governance checks.

Common mistakes to avoid

Mistake: assuming mitigation exit automatically resets startup state

Fix: make reset explicit, versioned, and auditable.

Mistake: validating only clean launch after reentry

Fix: always test warm launch persistence behavior.

Mistake: logging baseline source but not enforcing it

Fix: bind baseline-source validation to no-go gates.

Mistake: rotating owner token without lineage token

Fix: enforce parity as hard startup precondition.

FAQ

Is this the same as startup telemetry missing

No. Startup telemetry can be complete while source selection uses stale lineage data.

Can we ignore this if issue happens only after warm launch

No. Warm-launch-only regressions still impact real users and release confidence.

Should reentry baseline live in the same store as mitigation metadata

It can, but baseline rows must be versioned and prioritized over retired mitigation rows.

How long should retired lineage keys be kept

Keep for audit visibility, but mark them non-resolvable and out of startup route lookup.