Sony Bravia KLV-W772E 43 inches Triliminous Display Issue

#1
A couple of months before I have bought Sony Bravia KLV-W772E 43 inches Triliminous display TV. I found some strange thing on display. When I slightly press on the top or bottom of the display, a gap appears between border and display.

Is this normal or issue with the display?
 
#2
I BOUGHT FEW MONTHS BACK SONY X75E 4K 43INCH
I ALSO FOUND THESE ON MY TV I RAISED COMPLIANT TO SONY I DEMAND FOR RELAPLACEMET
THEY 1ST THEY SAID THEY DON'T HAVE THIS MODEL IN STOCK BECOZ ITS 2017 MODEL A NEW MODEL JUST LUNCHED X75F AND I HAVE TO PAY 16000/- EXTRA
I DENIIED TO PAY ANY SINGLE RS
FININALY THEY RELAPLACED IT WITHOUT ANY COST TO NEWER MODEL X75F 43INCH

AND I FOUND SAME THING TO NEWER MODEL TOO THEN I RELALIZE THIS IS NORMAL TO ALL SONY TVs