Hi kaseyanne5
I haven't been to the jungle in years but trees planted at home used to produce all the berry types. It was a little quirky, though. The berry planted would be the dominant berry on the tree producing 3-4 of that type of berry. The dominant berry would be the only type that evolved in quality as well, with other types remaining normal. If a cutting was taken and spliced onto a faster growing plant like sage, which grows in all seasons, only one berry type could be obtained from a spliced plant.
I couldn't access your link either, but it would seem to indicate a bug report was filed at some point in time. If you have a memory of it working earlier this year, you can file a bug report as I don't see it currently listed as a bug in the compiled list of reports under JA. Crinrict should be able to access the archived reports to see if it just wasn't ported over to the new forums, or if it was designated as fixed, or a design change.