Some customers are experiencing ‘image bleeding’ on their Galaxy S8

So, what does bleeding mean? Put simply, it’s a term used to describe when parts of a panel are illuminated when they’re not supposed to be, which causes an image to “ghost” to the edge of the screen (as can be seen in the image above).

Don’t expect a firmware update to fix this issue, though

Bleeding is actually a common defect with OLEDs, and technically speaking, is a result of the use of low-temperature polycrystalline silicon. When Samsung finally switches to indium gallium zinc oxide, it shouldn’t be a problem anymore.

Article source: https://www.technobuffalo.com/2017/05/03/some-customers-are-experiencing-image-bleeding-on-their-galaxy-s8/