Apparently NOT A BUG. Only fabulous graphics display the particles so as to improve performance. (Still a tiny issue because unless on highest graphics settings, bubble columns are invisible from anywhere on the surface which is a pain in the neck.)
ALSO I CANNOT DELETE THIS REPORT. IF I COULD I WOULD.
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Thank you for your report!
We're tracking this issue as MC-188529, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as Won't Fix, which means this is considered a bug but won't be fixed. The description of that ticket or the comments might explain the rationale. Please do not leave a comment on the linked ticket.
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2 hours and nothing