Since at least 1.20.60.22 Preview, closing a world with Deferred Technical Preview turned on will cause a crash.

Steps to reproduce
・1. Select world creation
・2. Turn on experimental Render Dragon Features for Creators
・3. Create a world
・4. Open settings and change graphics mode to Deferred Technical Preview
・5. Open the menu screen, save and press exit.
・6. Game crashes

(Expected results)
Even if you save and press exit with Deferred Technical Preview enabled, you can return to the main menu without crashing.