All the latest activities use .net 6 or 8 unlike the old activities..that might be the difference. If you need complete deletes I would suggest either the code is exposed in github the link is here Github repositories can check that else if enterprise customer raise a support ticket
Referring to github code would help
if the ask is about backward compatibiltiy if those versions support is present for oracle then they might consider but its not like it would be done immediately ..that depends on the impact of the issue if it is because older version of oracle server in your system then it might not be supported..
a work around for that is to set the values in oracle server which I mentioned above..setting allowedlogonversion
cheers