The netbeans snap and the package on
ubuntu-disco-updates-universe share the same reviews in Ubuntu Software on 19.04.
This is an issue because now users can’t make a good decision about which package and which software version works better. I have no clue why this is happening so I don’t know where to report this/who to contact.
It seems as if this issue is not isolated. Okular has the same issue, but in KeepassXC, the reviews are correctly separated.