Recent update:
My Lumia 535 is currently at the service center about to be repaired. They are changing its touch panel since I called them first -as I previously told you- in order to order the touchpanel, plus they are also aware of the problem since they have had more cases like mine. I've already seen it and it is the new touch panel that has all the sensors visible. I'm taking it on a few hours, I guess it's going to be nicely repaired.
PS: Changing the whole screen would be expensive but the touch panel is just a plastic product so I think Microsoft should officially recognize the problem and make it official,since it's obviously not just a hardware problem but an easy and cheap one to fix.
I'll keep you updated guys.
EDIT: I've already got my phone back and I'd like to answer the reason of this post:
"Will there ever be a fix?" YES, A TOUCH PANEL REPLACE.
Everything else is just a lame mere try of Microsoft to deny it's a HARDWARE problem. No more accidental clicks instead of scrolling, double key pressing, etc. So everything's working as it should be.
Don't be silly Microsoft and fix all bad 535 instead of trying to make people think its a sofware problem... Or maybe one of those "fixes" could -almost- fix the bad touch panel models and ruin the wellworking ones.
I wish my experience be as useful to others as yours guys have been to me!