If you want to supress this issue reduce the value of the : Support Horizontal expansion (0.5 should be enough)
Or if you want to keep this expansion for the upper support, Increase the Minimum Support Area Value to 10 ( the size of your hole ) .
For me it's a bug it's a temporary workaround but should be report on the github ( even if I don't think it will ever become a hight priority )Edited by Cuq
Strange don't get the same issue. What is your Cura Release ?Edited by Cuq
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