No, that bug wasn't fixed - it was never there

.
If you unplug your stick and start ED, then the game will revert to default bindings - true. But your custom bindings won't be removed until you start editing those default bindings. So, in the case your bindings don't work at the start of the game
- close ED
- check (in your bindings folder) the BindingsErrorLog.txt file for the reason why ED hasn't used your custom bindings
- fix the issue (plugin your stick, or switch on the gamepad you use for free camera control)
- restart ED
and your custom bindings will be back again.
Of course, all bets are off if you start renaming files and keep copies ("backups") of your bindings in the bindings folder. In that case,
@STRONTIUM DOG has a sticky for you in the
PC subforum.