Somewhat relates to #3631. Seems when hide-zero-packages is enabled, and you only have private packages under your name, the packages tab is hidden in your profile. This makes it hard to find your packages (specifically, you can only find them by putting the URL directly).
On the repositories tab:

On the packages tab:

This is sort of a GitHub bug that we fall into. The Packages tab does not display the number of private packages inside, can you report this bug to GitHub?
Suppose that makes sense. I've reported it on their support page, let's see what happens.
I got a reply from GitHub support. The there is disabled on purpose due to performance issues:
I don't think the count will include public packages either at the moment. There were performance implications when calculating the number of visible packages. I believe this is why the count was disabled.
It's great that you actually got an answer.
We have 2 choices:
I've already disabled it since I raised this. Perhaps an alternative would be to disable it for packages on profile pages? That is, providing it works fine everywhere else. If not, this can be closed, but this sounds like others will eventually come and report it.
What if we disable on your own profile?
That would be a good compromise, we already do it with a number of features. It might be worth mentioning this issue in a JS comment as well.
The exclusion list also needs to include your organizations as well.
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What if we disable on your own profile?