Grey stroke around images

Builder
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** OS and Win10
** PsychoPy version 3.2.3. and 3.0.6
** Standard Standalone? yes
** What specifically went wrong when you tried that?:**
I recently upgraded to Psychopy 3.2.3. When running an experiment, I noticed there was a grey stroke/line around the images, which did not show when I was using 3.0.6. This grey stroke varies depending on the resolution of the computer’s monitor. Any ideas on why it is showing, and how to erase it?

I would appreciate any help,

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164032×3024 1.48 MB
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154032×3024 2.8 MB

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Hi @Roberto_Abreu, would you mind sharing a minimum working example of this error, in the form of a psyexp file?