Problem with Button Texture display (SLOVED)

Hi I am designing my game gui in defold.

when i import all the gui assets into the engine ,everything seems fine

but when I run the game ,i found there is some strange 1 pixel line with the button that i did not design these lines.

it seems a display bug,but i did not know what is wrong with my settings ?

does anyone can help me with this? or do i need to provide more information?


the display screenshot

the designed button

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This is a rendering artefact known as texture bleeding. Extrude the borders of the atlas to solve the problem. Read more here: Texture Management in Defold