Possible fix for PS4 controller bluetooth bug

[Extulen]

The bug:
- USB - light pulses orange - WORKS
- Bluetooth, Steam closed - light pale blue - WORKS
- Bluetooth, Steam open - light dark blue - DOESN'T WORK


To replicate (I used html5gamepad.com on Chrome to test inputs):
- Close Steam
- Connect DualShock 4 controller via bluetooth
- Light on controller flashes, then solid pale blue
- Controller inputs are registered
- Open Steam
- Light on controller turns dark blue
- Controller inputs no longer registered


Things that have been attempted, based on other posts:
- Resetting PS4 controller (reset button on back)
- Making sure configuration support is disabled: Steam > Preferences > Controller > General Controller Settings > Playstation Configuration Support
- Removing registered account in Steam > Preferences > Controller > General Controller Settings > "Controller name", with controller connected by USB
- Deleting Library/Preferences/com.apple.Bluetooth.plist
- Deleting /Library/Extensions/SteamInput.kext
- Doing all of the above and rebooting the computer

None of those made a difference.


The "fix":
I have all my steam games in a shared folder (/Users/Shared/SteamLibrary), means games don't need to be downloaded multiple times for use by different Users.
Switching to a different User, using the same steam account, the same steam library, and the same controller, the bug couldn't be replicated.

I know that the User where it breaks I had tried enabling Playstation Configuration Support, something which I MAY (not certain!) have never done as the User where it works. Perhaps enabling it toggles a hidden system setting somewhere that isn't untoggled when disabled. But that's just guessing.

If you have the same problem, I'd suggest trying to replicate it on a different computer or as a different user if you can, or perhaps reinstalling steam might be enough...



All of this was done on a Late 2013 MacBook Pro running High Sierra 10.13.6 with a CUH-ZCTE PS4 controller


EDIT: Just realised that the different Users were on different verisons of Steam.
The User that worked was on Built: Apr 2 2018, package versions 1522709999
The User that didn't was on Built Aug 29, package versions 1535576546
Did a few more back and forths between the Users, bug persists for broken User, although Steam on working User has updated automatically, and doesn't seem to have broken it.