Parts of the touchscreen don't work - See first post for troubleshooting

Hello all, since approx. a week I’ve got the same issue like @Reitho and @nivoliev, left side of the touchscreen is not reacting (or letters are shifted 1 place right, e.g. when typing “q” I get “w”, “a” -> “s” etc.).
I can confirm that dis- and re-mounting the display didn’t change anything (however, theview inside the phone was really interesting!).
Removing the screen protector (this one) didn’t change anything.

So it looks I’ll have to contact support about this.
@Reitho: did I understand you right, that you didn’t have to turn in your phone but directly got a new display as spare part?

Have a nice Sunday,