I have several extensions that aren't loaded (don't have a check mark next to it) and I don't have the extension panel come up when launching Safari. Ever. So you likely haven't found any issue, you've just come across something that is particular to your setup.
I have several extensions that aren't loaded (don't have a check mark next to it) and I don't have the extension panel come up when launching Safari. Ever. So you likely haven't found any issue, you've just come across something that is particular to your setup.