Trying to find out what P1 means in this context with a web search failed. Is that some kind of well-known classification?
Seems to be a relatively-standard bug prioritization method. WebKit has their own apparently and msft seems to have their own with P0 above P1. Appears it comes from being a standard way of representing things in BugZilla.
In this case, it seems like P1 is a “drop everything and fix now” bug.
I found this just by searching “P1 bug” which seemed to help, so that’s how I found this.
Thanks, I tried every combination of “p1 (security|android|ios)” and a few more :/