If you go through nether and again to the overworld the ambient of the nether still exist. This is actually since 25w31a. Some sound bugs are still going on after playing a while.
MC-301005
Ambient and sound problem
Resolved
Duplicate
2
Thank you for your report!
We're tracking this issue in https://report.bugs.mojang.com/servicedesk/customer/portal/2/MC-300441 , so this ticket is being resolved and linked as a duplicate.
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