Looks to be a UI issue (also can't edit my previous post with additional information), as when I select any other mission and look at the briefing I can see the UI tab for the Investigation, but where it should be in the Star map and Bridge is a Directive I can't get rid of (or move) that I've had since the main update.

Any way a GM can just remove the current Directives (as I finally closed in one the first the game gave me a second with similarly rare enemies, so I just can't be rid of the bloody tab) I've been given to see if that lets me access the Investigations properly?

Seriously, leveling through anything but investigations is a painful enough slog that I keep having to convince myself to not shelve the game entirely.

Two hotfixes in now, and it looks like I'm the only player unable to access investigation missions still; in global chat other players have stated they're able to access them as normal.

I select the mission, and regardless of what actions I select (or do not select) it closes the mission panel out and does not continue into the next Investigation screen. At this point I think I've burned about a thousand thrones on actions without being able to start an investigation--and leveling a fresh character in missions with Decimators (plural) is less fun and more an exercise in how hard I want to hit my head against my desk when I fail a mission for the umpteenth time.

I'd rather avoid a fresh install at this point, as it was already a two day slog with the (recently "upgraded") network to begin with.