Why does short pressing the left shift key switch the view mode in addition to increasing the throttle?

[Anonymous Kerman]

When flying a spaceship if I press left shift briefly and let go immediately it beeps¹ and switches the view mode² in addition increasing the throttle. If I long press it it just increases the throttle as expected.

Why does it switch the view mode in addition to adjusting the throttle and how do I make it stop?

I thought it might have to do with Karabiner interfering with KSP but I disabled it and the issue still occurs.

I'm running OS X 10.11.3.

Here are the plugins I have installed in case they're relevant somehow:

• KerbalAlarmClock
• Docking Port Alignment Indicator
• KerbalEngineer
• EditorExtensions

¹As in a "you can't do that right now" beep.

²i.e. if I was looking at my ship then it switches to IVA.

[sal_vager]

Well, I can't say why it's doing this for you, because simply put, KSP doesn't do this.

Something is interpreting your short tap on the shift key as the "C" keystroke (assuming you have not rebound this).

As you only have a few mods I'd try removing them all and see if this issue goes away, if it doesn't then I'd check for any accessibility aids or keymaps at the OS level, in case one of those is causing this.

Or you might have a bad setting.cfg, delete it to force KSP to make a new one the next time you start the game.

[Anonymous Kerman]

I eventually tracked this down to the "Instant Send" functionality in LaunchBar which apparently uses shift as it's default hotkey. I suspect that it uses command-C to copy to the clipboard as part of its implementation which was causing the issue. I disabled this and everything is back to normal.

Thanks for your advice on troubleshooting.