Default [Q] s view not sensitive

Hello,
I bought the 'created N7',
a 7 inch phablet that is like the ulefone u7/tronsmart ps7/luftco a onex/orientphone mega pro 7 etc..., and is sold by the factory with 4.4.2 installed
I found a bug in this product

The bug is about the bad working of the s-view window.
I link here a video where is possible to see how it should work:

http://youtu.be/lk1P9jziw64


The problem is that with the created N7 it is not possible to answer
to the calls without opening the flip cover:
when the N7 receive a call, the s-view window is not sensitive, so it
is not possible to answer
The sview with cover closed is sensitive only for a few seconds after the cover has ben closed, specifically only before the sview goes in standby (black screen)...after the standby, wakening the phone by a call or simply pressing the power button (without opening the cover) the sview seems not sensitive


These are two videos that shows the problem:
https://www.youtube.com/watch?v=EG6D...e_gdata_player

https://www.youtube.com/watch?v=-By6...e_gdata_player

This should be fixed, because is an important feature that is missing:
the phones like N7 of other brands (like ulefone u7/u69, luftco a-one
x, tronsmart ps7, orientphone mega pro 7) instead have a fully
functional s-view window

I already informed some created online sellers (kent wang, peter
yang... ) about this bug,
they told me that they will contact the engineer... but i have
not answer yet...i think they are not able to solve this problemi...
A seller told me that they send the leather case for free,
Its a gift , so i cannot ask them to fix this problem ��


Can someone help me to fix this problem?
I tried installing firmware of other device (luftco a onex 4.4.2)
But nothing has changed ...(and by the way i found that the luftco firmware
does not fit with my n7...the camera does not work with it)

Any hint?
Any suggestion?

I did some tests i found that actually the sview is sensitive also after the standby, but not enought to feel the touches through the screen...

in the settings there is an option 'increase touch sensitivity to allow the control through sview screen',
seems that this high sensitivity status is not reactivated if the cover is not opened after the phone goes to standby...

How can i fix this problem? perhaps some fix on touch drivers is needed?

Please help me!
Thank you!