# v8.3 * **Breaking Changes** * * **Bug Fixes** 1. **\[FIXED]** World services not cleaning up correctly on shutdown (causing avatar loading failures on world travel) 2. **\[FIXED]** World builder setting not correctly detected leading to some settings and engine content being incorrectly writeable in editor 3. **\[FIXED]** Bubbles collision detection fix 4. **\[FIXED]** Co Op Emotes not canceling * **Features** 1. Quests and World Travel tabs on the Profile Overlay can be disabled on a per experience basis via the live config. 2. Respect "ODK.AvatarSelector.AllowListCollectionContractsArray" to allow avatar filtering by collection 3. Added "OverlayProfileLoaded" condition on startup when the initial overlay kv store has been read 4. Expose font style overrides for tweaking styles without having to create a new style each time --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.otherside.xyz/release-notes/releases/v8.3.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.