Same. FWIW, the word I've heard is that it really isn't a problem for track bikes as much as road bikes.
Seems many road bikes get quick-shifted at part-throttle, and the shift times are targeted for full-throttle, hard-on-the-gas shifts. Apparently, this causes rough shifts and damages parts.
Kind of funny from my perspective, as I've eventually had to rebuild every Kawasaki transmission I've owned (Ninja 250R, ZX-6Rs, Gen1 & Gen4 ZX-10Rs - maybe this just says something about my shifting) up 'til now. The Gen5 bike is the first one that has given me no difficulty, yet it gets the recall. Go figure.
Here in lies the repercussions of OEM quickshifters it would seem. Everybody buys the bike and most don't read the instruction manual or thinks they "know how it's supposed to work" and just start flicking the pedal.
There's been a few threads on here asking "why doesn't my quickshifter work?" and the answer in some cases is to go through the menu to turn the feature on.
I wonder how many of these failures can be attributed to something like that? Maybe.
Quickshifters are for full throttle/hard acceleration use only! Any other use can and will damage transmission parts. So many people expect these things to work like an "automatic transmission".
Your method is what I advocate also....which is 1-2 clutch, then bang, bang, bang from there if on the gas full and needing to go! There is only a small amount of time and opportunity on the street where this can be used and it's designed primarily for track riding.
As for me and Kawi, the only tranny I've had issues with was my 2000 ZX-7R. Tranny would pop out of gear. That was caused by a failed clutchless upshift in a wheelie that damaged the shift drum. Every other Kawi has been flawless for me. And I'm still waiting to get my letter for this one in the mail on my '16! My CR18 VIN number is outside the VIN range I've seen that applies, so we'll see. I ain't worried and am in no hurry to rush to a dealership to have it addressed. No biggie.