All items are invulnerable to fire damage in the snapshot 20w06a. Not sure if the same applies to lava.
MC-171887
Fire doesn't burn all items
Resolved
Duplicate
0
Thank you for your report!
However, this issue is a Duplicate of MC-170881.
That ticket has already been resolved as Fixed. The fix will arrive in the next version or is already included in the latest development version of the game, you can check the Fix Version/s field in that ticket to learn more.
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