Slayer Seal Beacon Menu UI Lock: Confirmed Fix

Symptom

The interface stops responding after Slayer Seal is equipped from the Beacon menu. This page covers that specific menu interaction, not every freeze that happens near a Beacon.

Affected platform and version

The checked developer post confirms the PC fix in Hotfix 2. Xbox has a related but separately worded Slayer Seal crash fix in its own hotfix. Do not use the PC label as proof of PS5 status.

Is this the same issue?

Match all three points before treating it as the same bug:

1. You are changing equipment at a Beacon.
2. The selected item is Slayer Seal.
3. The failure occurs during or immediately after that selection.

Known trigger

Equipping Slayer Seal from the Beacon menu is the only trigger explicitly named in the PC patch note.

Safe troubleshooting order

1. Allow Steam to finish updating Mortal Shell II.
2. Fully close and reopen the game.
3. Read the build string in the lower-right of the pause menu.
4. Retest the same Beacon-menu action once.
5. If it still occurs, record the build, platform, and a short reproduction sequence for the official bug thread.

Verified workaround

Before the patch installs, avoid equipping Slayer Seal through the affected Beacon flow. The permanent documented resolution is Hotfix 2.

High-risk actions to avoid

Do not delete saves, edit configuration files, reinstall the operating system, or use an old beta branch for this symptom. None of those actions is supported by the checked fix note.

Official status

Fixed in PC Hotfix 2. A similarly named Xbox crash case is fixed in the first Xbox launch hotfix.

Still unknown

The post does not identify a PS5 build or confirm that every Seal-related menu failure shares the same cause.