Until they fix things (assuming they do), a list of planes that currently aren’t bugged in any way would be good. Which planes have you flown since the update that (at least) seem to be working as intended?
(Just to be clear, if you’ve read that others are having trouble with a plane, this isn’t the place to say, “It’s fine for me”.)
For example, I was mainly flying the Longitude, but it’s now hopeless due to the “dolphin dance”. Tried the TBM - it too “do the dance”. Tried the CJ4 but the speedo keeps freezing making landing etc a fools’ enterprise.
I decided to give the King Air a go, on the basis that if they make you fly that for the Japan Discovery flight, they must have tested it properly - and sure enough, having actually completed (unlikely as it may seem) several flights with it yesterday, everything worked perfectly, including AP and ILS. I also haven’t seen anyone complaining of bugs with this one (though that may be because not many people have been flying it).
So, which other planes are trouble free right now?
I fly TBM with no issues on the regular basis.
Me too! The tbm is da boss!!
Here is the list you asked for:
end of list.
I’m glad I could help! 
A lot depends on how you define ‘working’. For me, if I can make a successful flight with the AP behaving reasonably to get me to the destination and onto the glide slope, I’m happy; for others they want systems to work at a deeper level; particularly those who want to program flights in cockpit.
But, anyway, to answer your question since the update I’ve flown the DA62 and TBM 930 and both were fine for me.
Certified by the FAA to do what it says on the can - zero.
Here is my list…
plus ten characters
TBF the only plane I fly is the DA62 - in P3D and here. The DA62 is actually very solid. Vertx the company that built it is owned by a former aircraft builder from RealAir who knows what he is doing. The autopilot on the plane functions very well, although I believe this last overall update ■■■■■ with the interaction between ATC and flight plans - nothing to do with the plane modelling. The co-pilot function also is actually generic for all planes with minor tweaks in air.cfg on the PID ratios. So the DA62 does suffer like all the rest from random co-pilot guff because ASOBO are currently employing a “one size fits all” with the coding. So bottom line - DA62 - solid aircraft in this swamp of mediocrity!! PS there are some nice liveries for it and also the latest Garmin G1000 Improvements Mods - V.0.3.0 uploaded last night, works very well in conjunction with it!
Out of the steam gauge faction I would consider the Cap 10 to be closest to make it on your list. It has the least inop switches (around 2) and battery master as well as ignition key are doing what they are supposed to do, unlike in the Cub replicas. Power off glide is a stable 140-150 km/h at between 500 to 1000ft/min.
Drag effects are surprisingly minimal so setting the throttle to idle on descent causes almost no reduction in speed. The behaviour on landing is definitely less docile than that of the other two taildraggers (Cubs) which is nice. I haven´t tried any aerobatics yet so I cannot comment on that.
In any case my favourite.
afaik the drone is flyable and has no bugs.
A320Neo ( only with FlyByWIreMOd - https://github.com/flybywiresim/a32nx )
ICON
C152
C172 Skyhawk
C172 Skyhawk (G1000)
KAir 350i ( I still have to test )
Of course, the Langitude is hopping throug the sky now and my A320 Monitors are black.
For me, the TBM IS NOT ISSUE FREE if your AI traffic slider is not zero. The primary screen will freeze during flight when my traffic sliders are not zero. I love the TBM but my AI Traffic sliders must be at zero. Same with the G36 and Baron. If my Traffic sliders are not zero with the G36 or Baron I get the dreaded dark/dim avionics screen.
Are you using Generic model?
The Caravan is working fine…
Here’s your list…
ahahahahahahahhahaha you win
To also present a more serious reply, I am currently keeping it simple with the C152. Only problems I found so far are the wrong °F/°C conversion plate in the window thermometer and the wind vector symbols showing totally different angles between the PFD in the left display and the map view in the right display.
As people already said, it depends on what you call working.
For me the 747-8 works fine enough to start a 10 hour flight with it, using autopilot and the click click radio communication.
Of course if you want 100% functionality of every little thing, most planes will fail you.
And the more extreme you fly the more bugs you find, for example the 10 hour flight ended with a crash because the reserve tanks don’t work as well as the balancing tank they just are there and fuel out of them can’t be used.
It is a nasty surprise if your engines go off at 10% fuel left. 
Also if you run empty and put new fuel into the tanks through the weights tool the engines won’t restart because no fuel is pumped any more No way to fix that but restart.
So yeah, you can fly casually, you can fly some routes, but you will have to expect some unforeseen troubles.