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Diagnose a MythicMobs boss bar that disappears during combat

Applies to: MythicMobs; match the linked maintainer documentation to your installed platform and release.
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A boss bar can disappear while the entity remains alive. Check its visibility rules and encounter transitions before replacing the mob or resetting the arena.

Check the installed content

MythicMobs separates mob definitions, skills, targeters and triggers. Keep the internal IDs stable while testing a behaviour change; changing a display name does not require replacing the mob ID. Use documentation for your installed MythicMobs release.

Work through the change

  1. Record the boss internal ID, entity health and whether all players lose the bar or only players at a particular distance. Use a test copy of the encounter.
  2. Compare the boss-bar section with the mob reference for the installed release. Keep a copy of the existing title, range and display settings before editing them.
  3. Remove optional visibility conditions from the staging variant one at a time. Test close to the boss, at the arena edge and after leaving and re-entering the area.
  4. Follow any phase transition that replaces or transforms the boss. Confirm that the new entity or definition also has the required display configuration.

Verify the result

The intended players should see a consistent bar for the active boss entity, with a health display that follows the encounter. A replacement phase should create the expected new bar rather than leaving an old one behind.

If the result differs

If only one client fails, compare client-side display behaviour before editing the server definition. If everyone fails at the same phase, inspect the entity replacement and skill log at that timestamp.

Keep a recovery path

Reinstate the previous bar section while keeping the working combat logic. Do not delete live bosses to repair a cosmetic display; plan a controlled encounter reset if the entity itself needs replacement.

References and related help

Check the maintainer reference: MythicMobs documentation.

Before changing live data, read how to keep a completed recovery copy. For startup errors, use the log collection guide.

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