Not God. He refuses to look upon Sin. God actually shed His own Blood in Christ Jesus to cover Sin once and for all.
So, is Sin still an issue? If so, for whom?
Yes, Sin is still an issue.
It is still an issue for the Sinner.
Sin has Consequences. Those Consequences are Evil.
Behold, all souls are mine; as the soul of the father, so also the soul of the son is mine: the soul that sins, it shall die. -
Eze 18:4
The Sin that is Unforgiveable is the Sin of rejecting Christ Jesus as Saviour and Lord.
This is the Sin that offends God.
And whoever was not found written in the book of life was cast into the lake of fire. -
Rev 20:15
All other Sins offend the Sinner and the Society in which he Sins.
There will be bi Sin in Heaven because no Sinners will be allowed in.