Had no problems with interactables during flight, heck I made a video about it:
I use a stick and use r1 to interact and l1 to throw.
Also these boards are getting deader and deader lol...
No you misunderstand. But then again probably I didn't explain it clearly.
The problem doesn't come from using a stick. It was just an example , because I assume most stick users wouldn't use the assigned buttons for throw/interact on the stick. And I expect them to place those assigned buttons on the uncomfortable 7th and 8th buttons on modern arcade sticks and be unused.
The problem is if you use light+medium attack (2 buttons ) to use enviromentals instead of the assigned button. ( In your case the assigned button is R1 )
During flight mode it seems you cannot press light+medium attack to use an interactible. You must use the assigned interact button instead.
I dunno if it's just 360 or on PS3 too.
Try using light+medium attack for using objects without flight mode( and not R1 ) . Now go into flight and use light+medium on an interactible. Does it work ? But R1 will still work for some reason. But not light+medium method .
Let me know the results, as I am trying to see if it's the same for other people and get others to recognise this problem. Because it probably is not well known.