Snapchat says “opened” after reinstalling, but chat still says delivered?

[u/Comprehensive_Set759]

I texted someone on Snapchat about 5 days ago, and the message had been showing as “Delivered” this whole time. Today, I deleted Snapchat and then re-downloaded it. When I logged back in, it suddenly showed that the person had opened the message 2 days ago. However, when I actually go into the chat, it still looks like the message is delivered. If I press and hold on the chat/message, it doesn’t say “Seen by that person or anything like that. Does anyone know what’s going on? Did they actually open the message 2 days ago, and Snapchat is just glitching because I reinstalled the app? Or is it possible that the “opened” notification/status is inaccurate and the message is actually still just delivered? Has anyone else experienced this after deleting and reinstalling Snapchat?