The thing that was fixed with this patch is that reconnects -cannot- happen in Gambit. They used to be able to happen and now they cannot; that's the fix.
A reconnect is when a person sees that they're having trouble contacting the servers and it goes to a black screen (not an error) and after a few moments, they respawn back onto the map and continues. This is what was disabled for Gambit; instead of reconnecting, it will boot the person to orbit to continue trying to recover the connection stability (and lead to an error if that doesn't happen easily).
A full disconnect because of an error code doesn't lead to a reconnect.
What you're describing has never been a standard thing in Destiny for Crucible. The only time you may be able to rejoin a fireteam after getting fully disconnected from the match is to try and join again and hope that another person hasn't been matchmade back into it.
That being said, if you get disconnected or leave and end up with a temp restriction for leaving, then you definitely won't be rejoining as the temp restriction normally lasts longer than the match you were part of.
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I tried re joining, couldnt. No, no one else can be matched into your previous game in comp. Plus somethings they said they fixed this patched hasn't actually been implemented yet. I fell in the category of what would work to rejoin but it isn't possible yet.