Honor 6 Plus — Red colour bleeding in the screen from punch hole front camera

There is a red colored bleed from the punch hole camera, all the way down to the bottom of the screen. It is a thin line. It started when I flew in an aircraft. After landing I observed this. It vanished by itself after two days.
Again last week, when I flew from Mumbai to Bengaluru it started again.
Of the two lines, one valmost vanished, but other line still remains.
When I make a screen shot th
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It is honor view 20