slime blocks dont really show in spectator

Please provide more details regarding this issue. You mentioned that the slime block only shows the "non transparent" parts of it in spectator mode, however, all of the slime block is transparent, so please clarify what you mean. Any additional information would be greatly appreciated.

I added an image. can't you see?

any one going to replY?

Thank you for your report!
We're tracking this issue as MC-178347, 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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yep thanks