When new symbols package is uploaded and the upload fails it is not clear what happened with the old correct published symbols.
The current behavior:
While this is fine for new symbol packages, if previous symbols were already published it is not clear if the old symbols are still available.
The old symbols are still available but the UI could lead the user to the conclusion that they are not.
More details see issue:
https://github.com/NuGet/NuGetGallery/issues/7188
Also, "Download Symbols" is then unavailable.
@304NotModified - I am simplifying this issue with appropriate message and making the download button available, see the screenshot below. Does this help in removing any confusion you might have with regards to this flow of symbols upload?

Note: this message and download button will also be available when the newer uploaded symbols package are being indexed and validated.
- I am simplifying this issue with appropriate message and making the download button available, see the screenshot below. Does this help in removing any confusion you might have with regards to this flow of symbols upload?
That's a real improvement! Would it be possible to only show the warning to the (logged in) owners of the package?
Another option would be to remove the warning and just show the last datetime when the symbols are updated.
I'm afraid the warning is scaring users ;)
@304NotModified - I think its fair to show this message only to the logged in owners of the package and not everyone.
Owners:

Everyone else (note: download symbols is visible):

Great!