Al,
... still don¡¯t understand why choosing mute for a given message
doesn¡¯t hold over past the current day.
Another place to check is the Messages section of the group in question. Change to "Topics" - if the message you received more recently isn't grouped with the message that you muted then somehow it wasn't considered to be the same topic - and that would prevent your Mute of that topic from blocking the newer message.
Why it didn't fall into the same topic would then be its own mystery to resolve.
Shal
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